Finding the Fourth Proportional to 7,239.31, 10,855.29 and 3,535.99

Step by Step Solution

1. Step 1: Write the proportion equation
   7,239.31 : 10,855.29 = 3,535.99 : x
2. Step 2: Convert to fraction form
   7,239.31/10,855.29 = 3,535.99/x
3. Step 3: Cross multiply
   7,239.31x = 10,855.29 × 3,535.99
4. Step 4: Simplify right side
   7,239.31x = 38,384,196.89
5. Step 5: Solve for x
   x = 38,384,196.89/7,239.31
6. Step 6: Final answer
   x = 5,302.19