Finding the Fourth Proportional to 13,395.22, 18,485.48 and 7,426.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,395.22 : 18,485.48 = 7,426.50 : x
2. Step 2: Convert to fraction form
   13,395.22/18,485.48 = 7,426.50/x
3. Step 3: Cross multiply
   13,395.22x = 18,485.48 × 7,426.50
4. Step 4: Simplify right side
   13,395.22x = 137,282,417.22
5. Step 5: Solve for x
   x = 137,282,417.22/13,395.22
6. Step 6: Final answer
   x = 10,248.61