Finding the Fourth Proportional to 13,426.72, 18,528.02 and 7,458.41

Step by Step Solution

1. Step 1: Write the proportion equation
   13,426.72 : 18,528.02 = 7,458.41 : x
2. Step 2: Convert to fraction form
   13,426.72/18,528.02 = 7,458.41/x
3. Step 3: Cross multiply
   13,426.72x = 18,528.02 × 7,458.41
4. Step 4: Simplify right side
   13,426.72x = 138,189,569.65
5. Step 5: Solve for x
   x = 138,189,569.65/13,426.72
6. Step 6: Final answer
   x = 10,292.13