Finding the Fourth Proportional to 9,381.43, 12,946.35 and 5,403.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,381.43 : 12,946.35 = 5,403.34 : x
2. Step 2: Convert to fraction form
   9,381.43/12,946.35 = 5,403.34/x
3. Step 3: Cross multiply
   9,381.43x = 12,946.35 × 5,403.34
4. Step 4: Simplify right side
   9,381.43x = 69,953,530.81
5. Step 5: Solve for x
   x = 69,953,530.81/9,381.43
6. Step 6: Final answer
   x = 7,456.60