Finding the Fourth Proportional to 31,111.80, 46,659.10 and 8,617.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,111.80 : 46,659.10 = 8,617.10 : x
2. Step 2: Convert to fraction form
   31,111.80/46,659.10 = 8,617.10/x
3. Step 3: Cross multiply
   31,111.80x = 46,659.10 × 8,617.10
4. Step 4: Simplify right side
   31,111.80x = 402,066,130.61
5. Step 5: Solve for x
   x = 402,066,130.61/31,111.80
6. Step 6: Final answer
   x = 12,923.27