Finding the Fourth Proportional to 31,098.78, 46,633.59 and 13,554.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,098.78 : 46,633.59 = 13,554.18 : x
2. Step 2: Convert to fraction form
   31,098.78/46,633.59 = 13,554.18/x
3. Step 3: Cross multiply
   31,098.78x = 46,633.59 × 13,554.18
4. Step 4: Simplify right side
   31,098.78x = 632,080,072.91
5. Step 5: Solve for x
   x = 632,080,072.91/31,098.78
6. Step 6: Final answer
   x = 20,324.92