Finding the Fourth Proportional to 17,978.73, 24,810.69 and 10,020.80

Step by Step Solution

1. Step 1: Write the proportion equation
   17,978.73 : 24,810.69 = 10,020.80 : x
2. Step 2: Convert to fraction form
   17,978.73/24,810.69 = 10,020.80/x
3. Step 3: Cross multiply
   17,978.73x = 24,810.69 × 10,020.80
4. Step 4: Simplify right side
   17,978.73x = 248,622,788.19
5. Step 5: Solve for x
   x = 248,622,788.19/17,978.73
6. Step 6: Final answer
   x = 13,828.72