Finding the Fourth Proportional to 13,238.08, 18,268.61 and 7,572.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,238.08 : 18,268.61 = 7,572.89 : x
2. Step 2: Convert to fraction form
   13,238.08/18,268.61 = 7,572.89/x
3. Step 3: Cross multiply
   13,238.08x = 18,268.61 × 7,572.89
4. Step 4: Simplify right side
   13,238.08x = 138,346,044.78
5. Step 5: Solve for x
   x = 138,346,044.78/13,238.08
6. Step 6: Final answer
   x = 10,450.62