Finding the Fourth Proportional to 9,878.85, 13,632.98 and 5,900.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,878.85 : 13,632.98 = 5,900.31 : x
2. Step 2: Convert to fraction form
   9,878.85/13,632.98 = 5,900.31/x
3. Step 3: Cross multiply
   9,878.85x = 13,632.98 × 5,900.31
4. Step 4: Simplify right side
   9,878.85x = 80,438,778.72
5. Step 5: Solve for x
   x = 80,438,778.72/9,878.85
6. Step 6: Final answer
   x = 8,142.52