Finding the Fourth Proportional to 49,777.98, 74,665.10 and 12,338.16

Step by Step Solution

1. Step 1: Write the proportion equation
   49,777.98 : 74,665.10 = 12,338.16 : x
2. Step 2: Convert to fraction form
   49,777.98/74,665.10 = 12,338.16/x
3. Step 3: Cross multiply
   49,777.98x = 74,665.10 × 12,338.16
4. Step 4: Simplify right side
   49,777.98x = 921,229,950.22
5. Step 5: Solve for x
   x = 921,229,950.22/49,777.98
6. Step 6: Final answer
   x = 18,506.78