Finding the Fourth Proportional to 13,585.32, 18,747.42 and 7,535.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,585.32 : 18,747.42 = 7,535.54 : x
2. Step 2: Convert to fraction form
   13,585.32/18,747.42 = 7,535.54/x
3. Step 3: Cross multiply
   13,585.32x = 18,747.42 × 7,535.54
4. Step 4: Simplify right side
   13,585.32x = 141,271,933.31
5. Step 5: Solve for x
   x = 141,271,933.31/13,585.32
6. Step 6: Final answer
   x = 10,398.87