Finding the Fourth Proportional to 31,372.50, 47,048.78 and 10,307.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,372.50 : 47,048.78 = 10,307.69 : x
2. Step 2: Convert to fraction form
   31,372.50/47,048.78 = 10,307.69/x
3. Step 3: Cross multiply
   31,372.50x = 47,048.78 × 10,307.69
4. Step 4: Simplify right side
   31,372.50x = 484,964,201.34
5. Step 5: Solve for x
   x = 484,964,201.34/31,372.50
6. Step 6: Final answer
   x = 15,458.26