Finding the Fourth Proportional to 13,210.43, 18,225.72 and 7,541.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,210.43 : 18,225.72 = 7,541.09 : x
2. Step 2: Convert to fraction form
   13,210.43/18,225.72 = 7,541.09/x
3. Step 3: Cross multiply
   13,210.43x = 18,225.72 × 7,541.09
4. Step 4: Simplify right side
   13,210.43x = 137,441,794.83
5. Step 5: Solve for x
   x = 137,441,794.83/13,210.43
6. Step 6: Final answer
   x = 10,404.04