Finding the Fourth Proportional to 31,182.18, 46,767.63 and 8,990.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,182.18 : 46,767.63 = 8,990.10 : x
2. Step 2: Convert to fraction form
   31,182.18/46,767.63 = 8,990.10/x
3. Step 3: Cross multiply
   31,182.18x = 46,767.63 × 8,990.10
4. Step 4: Simplify right side
   31,182.18x = 420,445,670.46
5. Step 5: Solve for x
   x = 420,445,670.46/31,182.18
6. Step 6: Final answer
   x = 13,483.52