Finding the Fourth Proportional to 7,180.10, 9,905.71 and 5,296.22

Step by Step Solution

1. Step 1: Write the proportion equation
   7,180.10 : 9,905.71 = 5,296.22 : x
2. Step 2: Convert to fraction form
   7,180.10/9,905.71 = 5,296.22/x
3. Step 3: Cross multiply
   7,180.10x = 9,905.71 × 5,296.22
4. Step 4: Simplify right side
   7,180.10x = 52,462,803.72
5. Step 5: Solve for x
   x = 52,462,803.72/7,180.10
6. Step 6: Final answer
   x = 7,306.70