Finding the Fourth Proportional to 9,312.48, 12,849.83 and 5,535.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,312.48 : 12,849.83 = 5,535.72 : x
2. Step 2: Convert to fraction form
   9,312.48/12,849.83 = 5,535.72/x
3. Step 3: Cross multiply
   9,312.48x = 12,849.83 × 5,535.72
4. Step 4: Simplify right side
   9,312.48x = 71,133,060.93
5. Step 5: Solve for x
   x = 71,133,060.93/9,312.48
6. Step 6: Final answer
   x = 7,638.47