Finding the Fourth Proportional to 10,089.18, 15,131.80 and 5,869.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,089.18 : 15,131.80 = 5,869.90 : x
2. Step 2: Convert to fraction form
   10,089.18/15,131.80 = 5,869.90/x
3. Step 3: Cross multiply
   10,089.18x = 15,131.80 × 5,869.90
4. Step 4: Simplify right side
   10,089.18x = 88,822,152.82
5. Step 5: Solve for x
   x = 88,822,152.82/10,089.18
6. Step 6: Final answer
   x = 8,803.70