Finding the Fourth Proportional to 9,280.34, 12,807 and 5,088.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.34 : 12,807 = 5,088.50 : x
2. Step 2: Convert to fraction form
   9,280.34/12,807 = 5,088.50/x
3. Step 3: Cross multiply
   9,280.34x = 12,807 × 5,088.50
4. Step 4: Simplify right side
   9,280.34x = 65,168,419.50
5. Step 5: Solve for x
   x = 65,168,419.50/9,280.34
6. Step 6: Final answer
   x = 7,022.20