Finding the Fourth Proportional to 9,385.08, 12,951.27 and 5,406.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,385.08 : 12,951.27 = 5,406.23 : x
2. Step 2: Convert to fraction form
   9,385.08/12,951.27 = 5,406.23/x
3. Step 3: Cross multiply
   9,385.08x = 12,951.27 × 5,406.23
4. Step 4: Simplify right side
   9,385.08x = 70,017,479.66
5. Step 5: Solve for x
   x = 70,017,479.66/9,385.08
6. Step 6: Final answer
   x = 7,460.51