Finding the Fourth Proportional to 12,875.88, 17,768.10 and 7,906.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,875.88 : 17,768.10 = 7,906.92 : x
2. Step 2: Convert to fraction form
   12,875.88/17,768.10 = 7,906.92/x
3. Step 3: Cross multiply
   12,875.88x = 17,768.10 × 7,906.92
4. Step 4: Simplify right side
   12,875.88x = 140,490,945.25
5. Step 5: Solve for x
   x = 140,490,945.25/12,875.88
6. Step 6: Final answer
   x = 10,911.17