Finding the Fourth Proportional to 10,617,937.72, 15,926,963.46 and 2,639,761.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,617,937.72 : 15,926,963.46 = 2,639,761.72 : x
2. Step 2: Convert to fraction form
   10,617,937.72/15,926,963.46 = 2,639,761.72/x
3. Step 3: Cross multiply
   10,617,937.72x = 15,926,963.46 × 2,639,761.72
4. Step 4: Simplify right side
   10,617,937.72x = 42,043,388,457,546.76
5. Step 5: Solve for x
   x = 42,043,388,457,546.76/10,617,937.72
6. Step 6: Final answer
   x = 3,959,656.72