Finding the Fourth Proportional to 10,299.59, 15,435.86 and 5,859.29

Step by Step Solution

1. Step 1: Write the proportion equation
   10,299.59 : 15,435.86 = 5,859.29 : x
2. Step 2: Convert to fraction form
   10,299.59/15,435.86 = 5,859.29/x
3. Step 3: Cross multiply
   10,299.59x = 15,435.86 × 5,859.29
4. Step 4: Simplify right side
   10,299.59x = 90,443,180.14
5. Step 5: Solve for x
   x = 90,443,180.14/10,299.59
6. Step 6: Final answer
   x = 8,781.24