Finding the Fourth Proportional to 10,221.18, 15,320.86 and 5,829.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,221.18 : 15,320.86 = 5,829.18 : x
2. Step 2: Convert to fraction form
   10,221.18/15,320.86 = 5,829.18/x
3. Step 3: Cross multiply
   10,221.18x = 15,320.86 × 5,829.18
4. Step 4: Simplify right side
   10,221.18x = 89,308,050.69
5. Step 5: Solve for x
   x = 89,308,050.69/10,221.18
6. Step 6: Final answer
   x = 8,737.55