Finding the Fourth Proportional to 31,468.30, 47,202.57 and 12,748.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,468.30 : 47,202.57 = 12,748.69 : x
2. Step 2: Convert to fraction form
   31,468.30/47,202.57 = 12,748.69/x
3. Step 3: Cross multiply
   31,468.30x = 47,202.57 × 12,748.69
4. Step 4: Simplify right side
   31,468.30x = 601,770,632.38
5. Step 5: Solve for x
   x = 601,770,632.38/31,468.30
6. Step 6: Final answer
   x = 19,123.08