Finding the Fourth Proportional to 13,760.57, 18,989.69 and 7,472.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,760.57 : 18,989.69 = 7,472.94 : x
2. Step 2: Convert to fraction form
   13,760.57/18,989.69 = 7,472.94/x
3. Step 3: Cross multiply
   13,760.57x = 18,989.69 × 7,472.94
4. Step 4: Simplify right side
   13,760.57x = 141,908,776.62
5. Step 5: Solve for x
   x = 141,908,776.62/13,760.57
6. Step 6: Final answer
   x = 10,312.71