Finding the Fourth Proportional to 9,389.94, 12,959.49 and 5,410.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,389.94 : 12,959.49 = 5,410.95 : x
2. Step 2: Convert to fraction form
   9,389.94/12,959.49 = 5,410.95/x
3. Step 3: Cross multiply
   9,389.94x = 12,959.49 × 5,410.95
4. Step 4: Simplify right side
   9,389.94x = 70,123,152.42
5. Step 5: Solve for x
   x = 70,123,152.42/9,389.94
6. Step 6: Final answer
   x = 7,467.90