Finding the Fourth Proportional to 9,315.01, 12,854.46 and 5,123.26

Step by Step Solution

1. Step 1: Write the proportion equation
   9,315.01 : 12,854.46 = 5,123.26 : x
2. Step 2: Convert to fraction form
   9,315.01/12,854.46 = 5,123.26/x
3. Step 3: Cross multiply
   9,315.01x = 12,854.46 × 5,123.26
4. Step 4: Simplify right side
   9,315.01x = 65,856,740.74
5. Step 5: Solve for x
   x = 65,856,740.74/9,315.01
6. Step 6: Final answer
   x = 7,069.96