Finding the Fourth Proportional to 5,142.18, 7,096.28 and 2,784.32

Step by Step Solution

1. Step 1: Write the proportion equation
   5,142.18 : 7,096.28 = 2,784.32 : x
2. Step 2: Convert to fraction form
   5,142.18/7,096.28 = 2,784.32/x
3. Step 3: Cross multiply
   5,142.18x = 7,096.28 × 2,784.32
4. Step 4: Simplify right side
   5,142.18x = 19,758,314.33
5. Step 5: Solve for x
   x = 19,758,314.33/5,142.18
6. Step 6: Final answer
   x = 3,842.40