Finding the Fourth Proportional to 9,385.65, 12,952.49 and 5,407.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,385.65 : 12,952.49 = 5,407.56 : x
2. Step 2: Convert to fraction form
   9,385.65/12,952.49 = 5,407.56/x
3. Step 3: Cross multiply
   9,385.65x = 12,952.49 × 5,407.56
4. Step 4: Simplify right side
   9,385.65x = 70,041,339.79
5. Step 5: Solve for x
   x = 70,041,339.79/9,385.65
6. Step 6: Final answer
   x = 7,462.60