Finding the Fourth Proportional to 9,510.78, 13,124.52 and 5,318.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,510.78 : 13,124.52 = 5,318.76 : x
2. Step 2: Convert to fraction form
   9,510.78/13,124.52 = 5,318.76/x
3. Step 3: Cross multiply
   9,510.78x = 13,124.52 × 5,318.76
4. Step 4: Simplify right side
   9,510.78x = 69,806,172.00
5. Step 5: Solve for x
   x = 69,806,172.00/9,510.78
6. Step 6: Final answer
   x = 7,339.69