Finding the Fourth Proportional to 17,981.60, 24,823.71 and 13,939.52

Step by Step Solution

1. Step 1: Write the proportion equation
   17,981.60 : 24,823.71 = 13,939.52 : x
2. Step 2: Convert to fraction form
   17,981.60/24,823.71 = 13,939.52/x
3. Step 3: Cross multiply
   17,981.60x = 24,823.71 × 13,939.52
4. Step 4: Simplify right side
   17,981.60x = 346,030,477.90
5. Step 5: Solve for x
   x = 346,030,477.90/17,981.60
6. Step 6: Final answer
   x = 19,243.59