Finding the Fourth Proportional to 31,949.78, 47,931.35 and 10,888.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,949.78 : 47,931.35 = 10,888.16 : x
2. Step 2: Convert to fraction form
   31,949.78/47,931.35 = 10,888.16/x
3. Step 3: Cross multiply
   31,949.78x = 47,931.35 × 10,888.16
4. Step 4: Simplify right side
   31,949.78x = 521,883,913.72
5. Step 5: Solve for x
   x = 521,883,913.72/31,949.78
6. Step 6: Final answer
   x = 16,334.51