Finding the Fourth Proportional to 8,256,404.10, 12,384,606.15 and 5,386,622.70

Step by Step Solution

1. Step 1: Write the proportion equation
   8,256,404.10 : 12,384,606.15 = 5,386,622.70 : x
2. Step 2: Convert to fraction form
   8,256,404.10/12,384,606.15 = 5,386,622.70/x
3. Step 3: Cross multiply
   8,256,404.10x = 12,384,606.15 × 5,386,622.70
4. Step 4: Simplify right side
   8,256,404.10x = 66,711,200,618,149.61
5. Step 5: Solve for x
   x = 66,711,200,618,149.61/8,256,404.10
6. Step 6: Final answer
   x = 8,079,934.05