Finding the Fourth Proportional to 9,280.38, 12,807.85 and 5,302.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.38 : 12,807.85 = 5,302.09 : x
2. Step 2: Convert to fraction form
   9,280.38/12,807.85 = 5,302.09/x
3. Step 3: Cross multiply
   9,280.38x = 12,807.85 × 5,302.09
4. Step 4: Simplify right side
   9,280.38x = 67,908,341.39
5. Step 5: Solve for x
   x = 67,908,341.39/9,280.38
6. Step 6: Final answer
   x = 7,317.41