Finding the Fourth Proportional to 17,978.60, 24,754.00 and 15,284.51

Step by Step Solution

1. Step 1: Write the proportion equation
   17,978.60 : 24,754.00 = 15,284.51 : x
2. Step 2: Convert to fraction form
   17,978.60/24,754.00 = 15,284.51/x
3. Step 3: Cross multiply
   17,978.60x = 24,754.00 × 15,284.51
4. Step 4: Simplify right side
   17,978.60x = 378,352,684.12
5. Step 5: Solve for x
   x = 378,352,684.12/17,978.60
6. Step 6: Final answer
   x = 21,044.62