Finding the Fourth Proportional to 12,876.22, 17,770.94 and 7,772.00

Step by Step Solution

1. Step 1: Write the proportion equation
   12,876.22 : 17,770.94 = 7,772.00 : x
2. Step 2: Convert to fraction form
   12,876.22/17,770.94 = 7,772.00/x
3. Step 3: Cross multiply
   12,876.22x = 17,770.94 × 7,772.00
4. Step 4: Simplify right side
   12,876.22x = 138,115,656.83
5. Step 5: Solve for x
   x = 138,115,656.83/12,876.22
6. Step 6: Final answer
   x = 10,726.42