Finding the Fourth Proportional to 13,392.02, 18,479.67 and 7,423.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,392.02 : 18,479.67 = 7,423.54 : x
2. Step 2: Convert to fraction form
   13,392.02/18,479.67 = 7,423.54/x
3. Step 3: Cross multiply
   13,392.02x = 18,479.67 × 7,423.54
4. Step 4: Simplify right side
   13,392.02x = 137,184,569.43
5. Step 5: Solve for x
   x = 137,184,569.43/13,392.02
6. Step 6: Final answer
   x = 10,243.75