Finding the Fourth Proportional to 8,939.53, 12,334.71 and 5,162.64

Step by Step Solution

1. Step 1: Write the proportion equation
   8,939.53 : 12,334.71 = 5,162.64 : x
2. Step 2: Convert to fraction form
   8,939.53/12,334.71 = 5,162.64/x
3. Step 3: Cross multiply
   8,939.53x = 12,334.71 × 5,162.64
4. Step 4: Simplify right side
   8,939.53x = 63,679,667.23
5. Step 5: Solve for x
   x = 63,679,667.23/8,939.53
6. Step 6: Final answer
   x = 7,123.38