Finding the Fourth Proportional to 21,739,426.42, 30,000,470.76 and 12,447,139.01

Step by Step Solution

1. Step 1: Write the proportion equation
   21,739,426.42 : 30,000,470.76 = 12,447,139.01 : x
2. Step 2: Convert to fraction form
   21,739,426.42/30,000,470.76 = 12,447,139.01/x
3. Step 3: Cross multiply
   21,739,426.42x = 30,000,470.76 × 12,447,139.01
4. Step 4: Simplify right side
   21,739,426.42x = 373,420,030,083,126.50
5. Step 5: Solve for x
   x = 373,420,030,083,126.50/21,739,426.42
6. Step 6: Final answer
   x = 17,177,087.51