Finding the Fourth Proportional to 7,340.64, 10,128.42 and 4,196.76

Step by Step Solution

1. Step 1: Write the proportion equation
   7,340.64 : 10,128.42 = 4,196.76 : x
2. Step 2: Convert to fraction form
   7,340.64/10,128.42 = 4,196.76/x
3. Step 3: Cross multiply
   7,340.64x = 10,128.42 × 4,196.76
4. Step 4: Simplify right side
   7,340.64x = 42,506,547.92
5. Step 5: Solve for x
   x = 42,506,547.92/7,340.64
6. Step 6: Final answer
   x = 5,790.58