Finding the Fourth Proportional to 8,123.40, 11,211.03 and 5,100.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,123.40 : 11,211.03 = 5,100.71 : x
2. Step 2: Convert to fraction form
   8,123.40/11,211.03 = 5,100.71/x
3. Step 3: Cross multiply
   8,123.40x = 11,211.03 × 5,100.71
4. Step 4: Simplify right side
   8,123.40x = 57,184,156.78
5. Step 5: Solve for x
   x = 57,184,156.78/8,123.40
6. Step 6: Final answer
   x = 7,039.44