Finding the Fourth Proportional to 14,443,436.72, 19,920,320.60 and 12,697,372.80

Step by Step Solution

1. Step 1: Write the proportion equation
   14,443,436.72 : 19,920,320.60 = 12,697,372.80 : x
2. Step 2: Convert to fraction form
   14,443,436.72/19,920,320.60 = 12,697,372.80/x
3. Step 3: Cross multiply
   14,443,436.72x = 19,920,320.60 × 12,697,372.80
4. Step 4: Simplify right side
   14,443,436.72x = 252,935,736,953,719.72
5. Step 5: Solve for x
   x = 252,935,736,953,719.72/14,443,436.72
6. Step 6: Final answer
   x = 17,512,157.38