Finding the Fourth Proportional to 9,423.76, 13,005.24 and 5,445.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,423.76 : 13,005.24 = 5,445.40 : x
2. Step 2: Convert to fraction form
   9,423.76/13,005.24 = 5,445.40/x
3. Step 3: Cross multiply
   9,423.76x = 13,005.24 × 5,445.40
4. Step 4: Simplify right side
   9,423.76x = 70,818,733.90
5. Step 5: Solve for x
   x = 70,818,733.90/9,423.76
6. Step 6: Final answer
   x = 7,514.91