Finding the Fourth Proportional to 12,362.66, 17,062.71 and 7,887.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,362.66 : 17,062.71 = 7,887.80 : x
2. Step 2: Convert to fraction form
   12,362.66/17,062.71 = 7,887.80/x
3. Step 3: Cross multiply
   12,362.66x = 17,062.71 × 7,887.80
4. Step 4: Simplify right side
   12,362.66x = 134,587,243.94
5. Step 5: Solve for x
   x = 134,587,243.94/12,362.66
6. Step 6: Final answer
   x = 10,886.59