Finding the Fourth Proportional to 12,147.93, 18,180.71 and 7,470.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,147.93 : 18,180.71 = 7,470.88 : x
2. Step 2: Convert to fraction form
   12,147.93/18,180.71 = 7,470.88/x
3. Step 3: Cross multiply
   12,147.93x = 18,180.71 × 7,470.88
4. Step 4: Simplify right side
   12,147.93x = 135,825,902.72
5. Step 5: Solve for x
   x = 135,825,902.72/12,147.93
6. Step 6: Final answer
   x = 11,180.99