Finding the Fourth Proportional to 21,180,663.42, 31,748,876.73 and 10,383,013.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,180,663.42 : 31,748,876.73 = 10,383,013.50 : x
2. Step 2: Convert to fraction form
   21,180,663.42/31,748,876.73 = 10,383,013.50/x
3. Step 3: Cross multiply
   21,180,663.42x = 31,748,876.73 × 10,383,013.50
4. Step 4: Simplify right side
   21,180,663.42x = 329,649,015,697,425.88
5. Step 5: Solve for x
   x = 329,649,015,697,425.88/21,180,663.42
6. Step 6: Final answer
   x = 15,563,677.55