Finding the Fourth Proportional to 9,235.78, 12,742.37 and 5,459.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,235.78 : 12,742.37 = 5,459.06 : x
2. Step 2: Convert to fraction form
   9,235.78/12,742.37 = 5,459.06/x
3. Step 3: Cross multiply
   9,235.78x = 12,742.37 × 5,459.06
4. Step 4: Simplify right side
   9,235.78x = 69,561,362.37
5. Step 5: Solve for x
   x = 69,561,362.37/9,235.78
6. Step 6: Final answer
   x = 7,531.73