Finding the Fourth Proportional to 7,238.78, 10,858.05 and 2,308.38

Step by Step Solution

1. Step 1: Write the proportion equation
   7,238.78 : 10,858.05 = 2,308.38 : x
2. Step 2: Convert to fraction form
   7,238.78/10,858.05 = 2,308.38/x
3. Step 3: Cross multiply
   7,238.78x = 10,858.05 × 2,308.38
4. Step 4: Simplify right side
   7,238.78x = 25,064,525.82
5. Step 5: Solve for x
   x = 25,064,525.82/7,238.78
6. Step 6: Final answer
   x = 3,462.54