Finding the Fourth Proportional to 17,789.62, 24,531.24 and 15,280.02

Step by Step Solution

1. Step 1: Write the proportion equation
   17,789.62 : 24,531.24 = 15,280.02 : x
2. Step 2: Convert to fraction form
   17,789.62/24,531.24 = 15,280.02/x
3. Step 3: Cross multiply
   17,789.62x = 24,531.24 × 15,280.02
4. Step 4: Simplify right side
   17,789.62x = 374,837,837.82
5. Step 5: Solve for x
   x = 374,837,837.82/17,789.62
6. Step 6: Final answer
   x = 21,070.59