Finding the Fourth Proportional to 9,280.17, 12,809.03 and 6,300.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.17 : 12,809.03 = 6,300.99 : x
2. Step 2: Convert to fraction form
   9,280.17/12,809.03 = 6,300.99/x
3. Step 3: Cross multiply
   9,280.17x = 12,809.03 × 6,300.99
4. Step 4: Simplify right side
   9,280.17x = 80,709,538.43
5. Step 5: Solve for x
   x = 80,709,538.43/9,280.17
6. Step 6: Final answer
   x = 8,696.99