Finding the Fourth Proportional to 13,255.50, 18,292.20 and 7,590.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,255.50 : 18,292.20 = 7,590.06 : x
2. Step 2: Convert to fraction form
   13,255.50/18,292.20 = 7,590.06/x
3. Step 3: Cross multiply
   13,255.50x = 18,292.20 × 7,590.06
4. Step 4: Simplify right side
   13,255.50x = 138,838,895.53
5. Step 5: Solve for x
   x = 138,838,895.53/13,255.50
6. Step 6: Final answer
   x = 10,474.06