Finding the Fourth Proportional to 7,380.72, 11,071.56 and 3,488.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,380.72 : 11,071.56 = 3,488.88 : x
2. Step 2: Convert to fraction form
   7,380.72/11,071.56 = 3,488.88/x
3. Step 3: Cross multiply
   7,380.72x = 11,071.56 × 3,488.88
4. Step 4: Simplify right side
   7,380.72x = 38,627,344.25
5. Step 5: Solve for x
   x = 38,627,344.25/7,380.72
6. Step 6: Final answer
   x = 5,233.55