Finding the Fourth Proportional to 22,539.25, 31,105.61 and 12,603.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,539.25 : 31,105.61 = 12,603.25 : x
2. Step 2: Convert to fraction form
   22,539.25/31,105.61 = 12,603.25/x
3. Step 3: Cross multiply
   22,539.25x = 31,105.61 × 12,603.25
4. Step 4: Simplify right side
   22,539.25x = 392,031,779.23
5. Step 5: Solve for x
   x = 392,031,779.23/22,539.25
6. Step 6: Final answer
   x = 17,393.29