Finding the Fourth Proportional to 11,069.56, 15,261.30 and 9,174.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,069.56 : 15,261.30 = 9,174.04 : x
2. Step 2: Convert to fraction form
   11,069.56/15,261.30 = 9,174.04/x
3. Step 3: Cross multiply
   11,069.56x = 15,261.30 × 9,174.04
4. Step 4: Simplify right side
   11,069.56x = 140,007,776.65
5. Step 5: Solve for x
   x = 140,007,776.65/11,069.56
6. Step 6: Final answer
   x = 12,648.00