Finding the Fourth Proportional to 12,436.05, 18,641.59 and 5,777.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436.05 : 18,641.59 = 5,777.22 : x
2. Step 2: Convert to fraction form
   12,436.05/18,641.59 = 5,777.22/x
3. Step 3: Cross multiply
   12,436.05x = 18,641.59 × 5,777.22
4. Step 4: Simplify right side
   12,436.05x = 107,696,444.49
5. Step 5: Solve for x
   x = 107,696,444.49/12,436.05
6. Step 6: Final answer
   x = 8,660.02