Finding the Fourth Proportional to 13,301.15, 18,356.42 and 7,637.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,301.15 : 18,356.42 = 7,637.69 : x
2. Step 2: Convert to fraction form
   13,301.15/18,356.42 = 7,637.69/x
3. Step 3: Cross multiply
   13,301.15x = 18,356.42 × 7,637.69
4. Step 4: Simplify right side
   13,301.15x = 140,200,710.46
5. Step 5: Solve for x
   x = 140,200,710.46/13,301.15
6. Step 6: Final answer
   x = 10,540.50