Finding the Fourth Proportional to 9,381.25, 12,946.34 and 5,401.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,381.25 : 12,946.34 = 5,401.72 : x
2. Step 2: Convert to fraction form
   9,381.25/12,946.34 = 5,401.72/x
3. Step 3: Cross multiply
   9,381.25x = 12,946.34 × 5,401.72
4. Step 4: Simplify right side
   9,381.25x = 69,932,503.70
5. Step 5: Solve for x
   x = 69,932,503.70/9,381.25
6. Step 6: Final answer
   x = 7,454.50