Finding the Fourth Proportional to 9,381.39, 12,946.35 and 5,402.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,381.39 : 12,946.35 = 5,402.73 : x
2. Step 2: Convert to fraction form
   9,381.39/12,946.35 = 5,402.73/x
3. Step 3: Cross multiply
   9,381.39x = 12,946.35 × 5,402.73
4. Step 4: Simplify right side
   9,381.39x = 69,945,633.54
5. Step 5: Solve for x
   x = 69,945,633.54/9,381.39
6. Step 6: Final answer
   x = 7,455.79