Finding the Fourth Proportional to 31,047.30, 46,578.18 and 8,860.98

Step by Step Solution

1. Step 1: Write the proportion equation
   31,047.30 : 46,578.18 = 8,860.98 : x
2. Step 2: Convert to fraction form
   31,047.30/46,578.18 = 8,860.98/x
3. Step 3: Cross multiply
   31,047.30x = 46,578.18 × 8,860.98
4. Step 4: Simplify right side
   31,047.30x = 412,728,321.42
5. Step 5: Solve for x
   x = 412,728,321.42/31,047.30
6. Step 6: Final answer
   x = 13,293.53