Finding the Fourth Proportional to 31,111.89, 46,658.27 and 8,919.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,111.89 : 46,658.27 = 8,919.32 : x
2. Step 2: Convert to fraction form
   31,111.89/46,658.27 = 8,919.32/x
3. Step 3: Cross multiply
   31,111.89x = 46,658.27 × 8,919.32
4. Step 4: Simplify right side
   31,111.89x = 416,159,762.89
5. Step 5: Solve for x
   x = 416,159,762.89/31,111.89
6. Step 6: Final answer
   x = 13,376.23