Finding the Fourth Proportional to 12,377.57, 18,537.77 and 7,436.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,377.57 : 18,537.77 = 7,436.32 : x
2. Step 2: Convert to fraction form
   12,377.57/18,537.77 = 7,436.32/x
3. Step 3: Cross multiply
   12,377.57x = 18,537.77 × 7,436.32
4. Step 4: Simplify right side
   12,377.57x = 137,852,735.83
5. Step 5: Solve for x
   x = 137,852,735.83/12,377.57
6. Step 6: Final answer
   x = 11,137.30