Finding the Fourth Proportional to 9,280.08, 12,806.28 and 5,300.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.08 : 12,806.28 = 5,300.94 : x
2. Step 2: Convert to fraction form
   9,280.08/12,806.28 = 5,300.94/x
3. Step 3: Cross multiply
   9,280.08x = 12,806.28 × 5,300.94
4. Step 4: Simplify right side
   9,280.08x = 67,885,321.90
5. Step 5: Solve for x
   x = 67,885,321.90/9,280.08
6. Step 6: Final answer
   x = 7,315.17