Finding the Fourth Proportional to 10,512.88, 15,773.98 and 5,581.33

Step by Step Solution

1. Step 1: Write the proportion equation
   10,512.88 : 15,773.98 = 5,581.33 : x
2. Step 2: Convert to fraction form
   10,512.88/15,773.98 = 5,581.33/x
3. Step 3: Cross multiply
   10,512.88x = 15,773.98 × 5,581.33
4. Step 4: Simplify right side
   10,512.88x = 88,039,787.79
5. Step 5: Solve for x
   x = 88,039,787.79/10,512.88
6. Step 6: Final answer
   x = 8,374.47