Finding the Fourth Proportional to 7,131.05, 9,834.86 and 5,342.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,131.05 : 9,834.86 = 5,342.72 : x
2. Step 2: Convert to fraction form
   7,131.05/9,834.86 = 5,342.72/x
3. Step 3: Cross multiply
   7,131.05x = 9,834.86 × 5,342.72
4. Step 4: Simplify right side
   7,131.05x = 52,544,827.33
5. Step 5: Solve for x
   x = 52,544,827.33/7,131.05
6. Step 6: Final answer
   x = 7,368.46