Finding the Fourth Proportional to 17,978.09, 24,753.31 and 15,284.01

Step by Step Solution

1. Step 1: Write the proportion equation
   17,978.09 : 24,753.31 = 15,284.01 : x
2. Step 2: Convert to fraction form
   17,978.09/24,753.31 = 15,284.01/x
3. Step 3: Cross multiply
   17,978.09x = 24,753.31 × 15,284.01
4. Step 4: Simplify right side
   17,978.09x = 378,329,799.36
5. Step 5: Solve for x
   x = 378,329,799.36/17,978.09
6. Step 6: Final answer
   x = 21,043.93