Finding the Fourth Proportional to 12,737.57, 17,577.76 and 7,072.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,737.57 : 17,577.76 = 7,072.34 : x
2. Step 2: Convert to fraction form
   12,737.57/17,577.76 = 7,072.34/x
3. Step 3: Cross multiply
   12,737.57x = 17,577.76 × 7,072.34
4. Step 4: Simplify right side
   12,737.57x = 124,315,895.16
5. Step 5: Solve for x
   x = 124,315,895.16/12,737.57
6. Step 6: Final answer
   x = 9,759.78