Finding the Fourth Proportional to 9,280.42, 12,806.61 and 5,088.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.42 : 12,806.61 = 5,088.67 : x
2. Step 2: Convert to fraction form
   9,280.42/12,806.61 = 5,088.67/x
3. Step 3: Cross multiply
   9,280.42x = 12,806.61 × 5,088.67
4. Step 4: Simplify right side
   9,280.42x = 65,168,612.11
5. Step 5: Solve for x
   x = 65,168,612.11/9,280.42
6. Step 6: Final answer
   x = 7,022.16