Finding the Fourth Proportional to 17,978.47, 24,811.14 and 10,020.76

Step by Step Solution

1. Step 1: Write the proportion equation
   17,978.47 : 24,811.14 = 10,020.76 : x
2. Step 2: Convert to fraction form
   17,978.47/24,811.14 = 10,020.76/x
3. Step 3: Cross multiply
   17,978.47x = 24,811.14 × 10,020.76
4. Step 4: Simplify right side
   17,978.47x = 248,626,355.21
5. Step 5: Solve for x
   x = 248,626,355.21/17,978.47
6. Step 6: Final answer
   x = 13,829.12