Finding the Fourth Proportional to 10,807.78, 14,898.41 and 8,445.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,807.78 : 14,898.41 = 8,445.82 : x
2. Step 2: Convert to fraction form
   10,807.78/14,898.41 = 8,445.82/x
3. Step 3: Cross multiply
   10,807.78x = 14,898.41 × 8,445.82
4. Step 4: Simplify right side
   10,807.78x = 125,829,245.52
5. Step 5: Solve for x
   x = 125,829,245.52/10,807.78
6. Step 6: Final answer
   x = 11,642.47