Finding the Fourth Proportional to 9,510.66, 13,123.58 and 5,261.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,510.66 : 13,123.58 = 5,261.15 : x
2. Step 2: Convert to fraction form
   9,510.66/13,123.58 = 5,261.15/x
3. Step 3: Cross multiply
   9,510.66x = 13,123.58 × 5,261.15
4. Step 4: Simplify right side
   9,510.66x = 69,045,129.42
5. Step 5: Solve for x
   x = 69,045,129.42/9,510.66
6. Step 6: Final answer
   x = 7,259.76