Finding the Fourth Proportional to 31,302.86, 46,961.57 and 9,118.58

Step by Step Solution

1. Step 1: Write the proportion equation
   31,302.86 : 46,961.57 = 9,118.58 : x
2. Step 2: Convert to fraction form
   31,302.86/46,961.57 = 9,118.58/x
3. Step 3: Cross multiply
   31,302.86x = 46,961.57 × 9,118.58
4. Step 4: Simplify right side
   31,302.86x = 428,222,620.96
5. Step 5: Solve for x
   x = 428,222,620.96/31,302.86
6. Step 6: Final answer
   x = 13,679.99