Finding the Fourth Proportional to 12,111.66, 16,707.27 and 7,627.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.66 : 16,707.27 = 7,627.71 : x
2. Step 2: Convert to fraction form
   12,111.66/16,707.27 = 7,627.71/x
3. Step 3: Cross multiply
   12,111.66x = 16,707.27 × 7,627.71
4. Step 4: Simplify right side
   12,111.66x = 127,438,172.31
5. Step 5: Solve for x
   x = 127,438,172.31/12,111.66
6. Step 6: Final answer
   x = 10,521.94