Finding the Fourth Proportional to 31,056.52, 46,589.18 and 9,989.48

Step by Step Solution

1. Step 1: Write the proportion equation
   31,056.52 : 46,589.18 = 9,989.48 : x
2. Step 2: Convert to fraction form
   31,056.52/46,589.18 = 9,989.48/x
3. Step 3: Cross multiply
   31,056.52x = 46,589.18 × 9,989.48
4. Step 4: Simplify right side
   31,056.52x = 465,401,681.83
5. Step 5: Solve for x
   x = 465,401,681.83/31,056.52
6. Step 6: Final answer
   x = 14,985.64