Finding the Fourth Proportional to 7,196.32, 9,931.68 and 4,213.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,196.32 : 9,931.68 = 4,213.12 : x
2. Step 2: Convert to fraction form
   7,196.32/9,931.68 = 4,213.12/x
3. Step 3: Cross multiply
   7,196.32x = 9,931.68 × 4,213.12
4. Step 4: Simplify right side
   7,196.32x = 41,843,359.64
5. Step 5: Solve for x
   x = 41,843,359.64/7,196.32
6. Step 6: Final answer
   x = 5,814.55