Finding the Fourth Proportional to 12,226, 16,875.72 and 7,810

Step by Step Solution

1. Step 1: Write the proportion equation
   12,226 : 16,875.72 = 7,810 : x
2. Step 2: Convert to fraction form
   12,226/16,875.72 = 7,810/x
3. Step 3: Cross multiply
   12,226x = 16,875.72 × 7,810
4. Step 4: Simplify right side
   12,226x = 131,799,373.20
5. Step 5: Solve for x
   x = 131,799,373.20/12,226
6. Step 6: Final answer
   x = 10,780.25