Finding the Fourth Proportional to 8,123.77, 12,178.32 and 2,926

Step by Step Solution

1. Step 1: Write the proportion equation
   8,123.77 : 12,178.32 = 2,926 : x
2. Step 2: Convert to fraction form
   8,123.77/12,178.32 = 2,926/x
3. Step 3: Cross multiply
   8,123.77x = 12,178.32 × 2,926
4. Step 4: Simplify right side
   8,123.77x = 35,633,764.32
5. Step 5: Solve for x
   x = 35,633,764.32/8,123.77
6. Step 6: Final answer
   x = 4,386.36