Finding the Fourth Proportional to 12,139,615.72, 18,210,649.29 and 3,941,915.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,139,615.72 : 18,210,649.29 = 3,941,915.17 : x
2. Step 2: Convert to fraction form
   12,139,615.72/18,210,649.29 = 3,941,915.17/x
3. Step 3: Cross multiply
   12,139,615.72x = 18,210,649.29 × 3,941,915.17
4. Step 4: Simplify right side
   12,139,615.72x = 71,784,834,691,800.72
5. Step 5: Solve for x
   x = 71,784,834,691,800.72/12,139,615.72
6. Step 6: Final answer
   x = 5,913,270.76