Finding the Fourth Proportional to 31,860.16, 47,810.72 and 16,880.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,860.16 : 47,810.72 = 16,880.96 : x
2. Step 2: Convert to fraction form
   31,860.16/47,810.72 = 16,880.96/x
3. Step 3: Cross multiply
   31,860.16x = 47,810.72 × 16,880.96
4. Step 4: Simplify right side
   31,860.16x = 807,090,851.89
5. Step 5: Solve for x
   x = 807,090,851.89/31,860.16
6. Step 6: Final answer
   x = 25,332.29