Finding the Fourth Proportional to 9,527.89, 13,147.17 and 5,277.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,527.89 : 13,147.17 = 5,277.90 : x
2. Step 2: Convert to fraction form
   9,527.89/13,147.17 = 5,277.90/x
3. Step 3: Cross multiply
   9,527.89x = 13,147.17 × 5,277.90
4. Step 4: Simplify right side
   9,527.89x = 69,389,422.72
5. Step 5: Solve for x
   x = 69,389,422.72/9,527.89
6. Step 6: Final answer
   x = 7,282.77