Finding the Fourth Proportional to 9,540.51, 13,165.50 and 5,561.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,540.51 : 13,165.50 = 5,561.79 : x
2. Step 2: Convert to fraction form
   9,540.51/13,165.50 = 5,561.79/x
3. Step 3: Cross multiply
   9,540.51x = 13,165.50 × 5,561.79
4. Step 4: Simplify right side
   9,540.51x = 73,223,746.25
5. Step 5: Solve for x
   x = 73,223,746.25/9,540.51
6. Step 6: Final answer
   x = 7,675.03