Finding the Fourth Proportional to 31,225.32, 46,842.30 and 12,753

Step by Step Solution

1. Step 1: Write the proportion equation
   31,225.32 : 46,842.30 = 12,753 : x
2. Step 2: Convert to fraction form
   31,225.32/46,842.30 = 12,753/x
3. Step 3: Cross multiply
   31,225.32x = 46,842.30 × 12,753
4. Step 4: Simplify right side
   31,225.32x = 597,379,851.90
5. Step 5: Solve for x
   x = 597,379,851.90/31,225.32
6. Step 6: Final answer
   x = 19,131.26