Finding the Fourth Proportional to 13,426.22, 18,527.33 and 7,457.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,426.22 : 18,527.33 = 7,457.91 : x
2. Step 2: Convert to fraction form
   13,426.22/18,527.33 = 7,457.91/x
3. Step 3: Cross multiply
   13,426.22x = 18,527.33 × 7,457.91
4. Step 4: Simplify right side
   13,426.22x = 138,175,067.04
5. Step 5: Solve for x
   x = 138,175,067.04/13,426.22
6. Step 6: Final answer
   x = 10,291.43