Finding the Fourth Proportional to 12,523.98, 17,268.42 and 9,998.00

Step by Step Solution

1. Step 1: Write the proportion equation
   12,523.98 : 17,268.42 = 9,998.00 : x
2. Step 2: Convert to fraction form
   12,523.98/17,268.42 = 9,998.00/x
3. Step 3: Cross multiply
   12,523.98x = 17,268.42 × 9,998.00
4. Step 4: Simplify right side
   12,523.98x = 172,649,576.82
5. Step 5: Solve for x
   x = 172,649,576.82/12,523.98
6. Step 6: Final answer
   x = 13,785.52