Finding the Fourth Proportional to 17,724.52, 26,592.90 and 7,870.69

Step by Step Solution

1. Step 1: Write the proportion equation
   17,724.52 : 26,592.90 = 7,870.69 : x
2. Step 2: Convert to fraction form
   17,724.52/26,592.90 = 7,870.69/x
3. Step 3: Cross multiply
   17,724.52x = 26,592.90 × 7,870.69
4. Step 4: Simplify right side
   17,724.52x = 209,304,472.10
5. Step 5: Solve for x
   x = 209,304,472.10/17,724.52
6. Step 6: Final answer
   x = 11,808.75