Finding the Fourth Proportional to 31,485.30, 47,235.69 and 9,298.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,485.30 : 47,235.69 = 9,298.56 : x
2. Step 2: Convert to fraction form
   31,485.30/47,235.69 = 9,298.56/x
3. Step 3: Cross multiply
   31,485.30x = 47,235.69 × 9,298.56
4. Step 4: Simplify right side
   31,485.30x = 439,223,897.61
5. Step 5: Solve for x
   x = 439,223,897.61/31,485.30
6. Step 6: Final answer
   x = 13,950.13