Finding the Fourth Proportional to 31,085.93, 46,630.49 and 8,902.57

Step by Step Solution

1. Step 1: Write the proportion equation
   31,085.93 : 46,630.49 = 8,902.57 : x
2. Step 2: Convert to fraction form
   31,085.93/46,630.49 = 8,902.57/x
3. Step 3: Cross multiply
   31,085.93x = 46,630.49 × 8,902.57
4. Step 4: Simplify right side
   31,085.93x = 415,131,193.28
5. Step 5: Solve for x
   x = 415,131,193.28/31,085.93
6. Step 6: Final answer
   x = 13,354.31