Finding the Fourth Proportional to 9,320.68, 12,862.78 and 5,071.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,320.68 : 12,862.78 = 5,071.98 : x
2. Step 2: Convert to fraction form
   9,320.68/12,862.78 = 5,071.98/x
3. Step 3: Cross multiply
   9,320.68x = 12,862.78 × 5,071.98
4. Step 4: Simplify right side
   9,320.68x = 65,239,762.90
5. Step 5: Solve for x
   x = 65,239,762.90/9,320.68
6. Step 6: Final answer
   x = 6,999.46