Finding the Fourth Proportional to 9,100.96, 12,559.20 and 5,326.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,100.96 : 12,559.20 = 5,326.72 : x
2. Step 2: Convert to fraction form
   9,100.96/12,559.20 = 5,326.72/x
3. Step 3: Cross multiply
   9,100.96x = 12,559.20 × 5,326.72
4. Step 4: Simplify right side
   9,100.96x = 66,899,341.82
5. Step 5: Solve for x
   x = 66,899,341.82/9,100.96
6. Step 6: Final answer
   x = 7,350.80