Finding the Fourth Proportional to 7,042.55, 10,558.85 and 3,530.03

Step by Step Solution

1. Step 1: Write the proportion equation
   7,042.55 : 10,558.85 = 3,530.03 : x
2. Step 2: Convert to fraction form
   7,042.55/10,558.85 = 3,530.03/x
3. Step 3: Cross multiply
   7,042.55x = 10,558.85 × 3,530.03
4. Step 4: Simplify right side
   7,042.55x = 37,272,986.82
5. Step 5: Solve for x
   x = 37,272,986.82/7,042.55
6. Step 6: Final answer
   x = 5,292.55