Finding the Fourth Proportional to 8,639,165.90, 12,956,386.86 and 3,247,401.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,639,165.90 : 12,956,386.86 = 3,247,401.71 : x
2. Step 2: Convert to fraction form
   8,639,165.90/12,956,386.86 = 3,247,401.71/x
3. Step 3: Cross multiply
   8,639,165.90x = 12,956,386.86 × 3,247,401.71
4. Step 4: Simplify right side
   8,639,165.90x = 42,074,592,779,803.59
5. Step 5: Solve for x
   x = 42,074,592,779,803.59/8,639,165.90
6. Step 6: Final answer
   x = 4,870,214.70