Finding the Fourth Proportional to 12,738.04, 17,580.59 and 7,432.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,738.04 : 17,580.59 = 7,432.85 : x
2. Step 2: Convert to fraction form
   12,738.04/17,580.59 = 7,432.85/x
3. Step 3: Cross multiply
   12,738.04x = 17,580.59 × 7,432.85
4. Step 4: Simplify right side
   12,738.04x = 130,673,888.38
5. Step 5: Solve for x
   x = 130,673,888.38/12,738.04
6. Step 6: Final answer
   x = 10,258.56