Finding the Fourth Proportional to 17,870.07, 24,644.54 and 11,156.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,870.07 : 24,644.54 = 11,156.31 : x
2. Step 2: Convert to fraction form
   17,870.07/24,644.54 = 11,156.31/x
3. Step 3: Cross multiply
   17,870.07x = 24,644.54 × 11,156.31
4. Step 4: Simplify right side
   17,870.07x = 274,942,072.27
5. Step 5: Solve for x
   x = 274,942,072.27/17,870.07
6. Step 6: Final answer
   x = 15,385.62