Finding the Fourth Proportional to 17,724.32, 24,447.12 and 15,236

Step by Step Solution

1. Step 1: Write the proportion equation
   17,724.32 : 24,447.12 = 15,236 : x
2. Step 2: Convert to fraction form
   17,724.32/24,447.12 = 15,236/x
3. Step 3: Cross multiply
   17,724.32x = 24,447.12 × 15,236
4. Step 4: Simplify right side
   17,724.32x = 372,476,320.32
5. Step 5: Solve for x
   x = 372,476,320.32/17,724.32
6. Step 6: Final answer
   x = 21,014.99