Finding the Fourth Proportional to 7,339.65, 10,128.05 and 4,153.23

Step by Step Solution

1. Step 1: Write the proportion equation
   7,339.65 : 10,128.05 = 4,153.23 : x
2. Step 2: Convert to fraction form
   7,339.65/10,128.05 = 4,153.23/x
3. Step 3: Cross multiply
   7,339.65x = 10,128.05 × 4,153.23
4. Step 4: Simplify right side
   7,339.65x = 42,064,100.34
5. Step 5: Solve for x
   x = 42,064,100.34/7,339.65
6. Step 6: Final answer
   x = 5,731.08