Finding the Fourth Proportional to 7,255.15, 9,946.90 and 7,123.93

Step by Step Solution

1. Step 1: Write the proportion equation
   7,255.15 : 9,946.90 = 7,123.93 : x
2. Step 2: Convert to fraction form
   7,255.15/9,946.90 = 7,123.93/x
3. Step 3: Cross multiply
   7,255.15x = 9,946.90 × 7,123.93
4. Step 4: Simplify right side
   7,255.15x = 70,861,059.31
5. Step 5: Solve for x
   x = 70,861,059.31/7,255.15
6. Step 6: Final answer
   x = 9,767.00