Finding the Fourth Proportional to 31,477.56, 47,200.05 and 9,288.09

Step by Step Solution

1. Step 1: Write the proportion equation
   31,477.56 : 47,200.05 = 9,288.09 : x
2. Step 2: Convert to fraction form
   31,477.56/47,200.05 = 9,288.09/x
3. Step 3: Cross multiply
   31,477.56x = 47,200.05 × 9,288.09
4. Step 4: Simplify right side
   31,477.56x = 438,398,312.40
5. Step 5: Solve for x
   x = 438,398,312.40/31,477.56
6. Step 6: Final answer
   x = 13,927.33