Finding the Fourth Proportional to 17,551.60, 24,241.76 and 13,978.60

Step by Step Solution

1. Step 1: Write the proportion equation
   17,551.60 : 24,241.76 = 13,978.60 : x
2. Step 2: Convert to fraction form
   17,551.60/24,241.76 = 13,978.60/x
3. Step 3: Cross multiply
   17,551.60x = 24,241.76 × 13,978.60
4. Step 4: Simplify right side
   17,551.60x = 338,865,866.34
5. Step 5: Solve for x
   x = 338,865,866.34/17,551.60
6. Step 6: Final answer
   x = 19,306.84