Finding the Fourth Proportional to 17,978.56, 24,823.20 and 15,002.08

Step by Step Solution

1. Step 1: Write the proportion equation
   17,978.56 : 24,823.20 = 15,002.08 : x
2. Step 2: Convert to fraction form
   17,978.56/24,823.20 = 15,002.08/x
3. Step 3: Cross multiply
   17,978.56x = 24,823.20 × 15,002.08
4. Step 4: Simplify right side
   17,978.56x = 372,399,632.26
5. Step 5: Solve for x
   x = 372,399,632.26/17,978.56
6. Step 6: Final answer
   x = 20,713.54