Finding the Fourth Proportional to 10,538.98, 15,818.04 and 5,612.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,538.98 : 15,818.04 = 5,612.80 : x
2. Step 2: Convert to fraction form
   10,538.98/15,818.04 = 5,612.80/x
3. Step 3: Cross multiply
   10,538.98x = 15,818.04 × 5,612.80
4. Step 4: Simplify right side
   10,538.98x = 88,783,494.91
5. Step 5: Solve for x
   x = 88,783,494.91/10,538.98
6. Step 6: Final answer
   x = 8,424.30