Finding the Fourth Proportional to 10,135.30, 13,987.18 and 5,598.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,135.30 : 13,987.18 = 5,598.61 : x
2. Step 2: Convert to fraction form
   10,135.30/13,987.18 = 5,598.61/x
3. Step 3: Cross multiply
   10,135.30x = 13,987.18 × 5,598.61
4. Step 4: Simplify right side
   10,135.30x = 78,308,765.82
5. Step 5: Solve for x
   x = 78,308,765.82/10,135.30
6. Step 6: Final answer
   x = 7,726.34