Finding the Fourth Proportional to 9,423.72, 13,005.77 and 5,390.93

Step by Step Solution

1. Step 1: Write the proportion equation
   9,423.72 : 13,005.77 = 5,390.93 : x
2. Step 2: Convert to fraction form
   9,423.72/13,005.77 = 5,390.93/x
3. Step 3: Cross multiply
   9,423.72x = 13,005.77 × 5,390.93
4. Step 4: Simplify right side
   9,423.72x = 70,113,103.68
5. Step 5: Solve for x
   x = 70,113,103.68/9,423.72
6. Step 6: Final answer
   x = 7,440.07