Finding the Fourth Proportional to 9,389.30, 12,960.49 and 5,807.00

Step by Step Solution

1. Step 1: Write the proportion equation
   9,389.30 : 12,960.49 = 5,807.00 : x
2. Step 2: Convert to fraction form
   9,389.30/12,960.49 = 5,807.00/x
3. Step 3: Cross multiply
   9,389.30x = 12,960.49 × 5,807.00
4. Step 4: Simplify right side
   9,389.30x = 75,261,471.59
5. Step 5: Solve for x
   x = 75,261,471.59/9,389.30
6. Step 6: Final answer
   x = 8,015.67