Finding the Fourth Proportional to 8,898,581.78, 12,280,139.11 and 5,227,653.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,898,581.78 : 12,280,139.11 = 5,227,653.08 : x
2. Step 2: Convert to fraction form
   8,898,581.78/12,280,139.11 = 5,227,653.08/x
3. Step 3: Cross multiply
   8,898,581.78x = 12,280,139.11 × 5,227,653.08
4. Step 4: Simplify right side
   8,898,581.78x = 64,196,306,979,973.55
5. Step 5: Solve for x
   x = 64,196,306,979,973.55/8,898,581.78
6. Step 6: Final answer
   x = 7,214,217.79