Finding the Fourth Proportional to 13,454.47, 18,565.80 and 7,485.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,454.47 : 18,565.80 = 7,485.52 : x
2. Step 2: Convert to fraction form
   13,454.47/18,565.80 = 7,485.52/x
3. Step 3: Cross multiply
   13,454.47x = 18,565.80 × 7,485.52
4. Step 4: Simplify right side
   13,454.47x = 138,974,667.22
5. Step 5: Solve for x
   x = 138,974,667.22/13,454.47
6. Step 6: Final answer
   x = 10,329.26