Finding the Fourth Proportional to 40,499, 60,752.88 and 10,916.72

Step by Step Solution

1. Step 1: Write the proportion equation
   40,499 : 60,752.88 = 10,916.72 : x
2. Step 2: Convert to fraction form
   40,499/60,752.88 = 10,916.72/x
3. Step 3: Cross multiply
   40,499x = 60,752.88 × 10,916.72
4. Step 4: Simplify right side
   40,499x = 663,222,180.15
5. Step 5: Solve for x
   x = 663,222,180.15/40,499
6. Step 6: Final answer
   x = 16,376.26