Finding the Fourth Proportional to 11,561.94, 17,339.27 and 7,406.64

Step by Step Solution

1. Step 1: Write the proportion equation
   11,561.94 : 17,339.27 = 7,406.64 : x
2. Step 2: Convert to fraction form
   11,561.94/17,339.27 = 7,406.64/x
3. Step 3: Cross multiply
   11,561.94x = 17,339.27 × 7,406.64
4. Step 4: Simplify right side
   11,561.94x = 128,425,693.72
5. Step 5: Solve for x
   x = 128,425,693.72/11,561.94
6. Step 6: Final answer
   x = 11,107.62