Finding the Fourth Proportional to 5,178,867.29, 7,147,262.38 and 2,856,214.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,178,867.29 : 7,147,262.38 = 2,856,214.12 : x
2. Step 2: Convert to fraction form
   5,178,867.29/7,147,262.38 = 2,856,214.12/x
3. Step 3: Cross multiply
   5,178,867.29x = 7,147,262.38 × 2,856,214.12
4. Step 4: Simplify right side
   5,178,867.29x = 20,414,111,729,100.80
5. Step 5: Solve for x
   x = 20,414,111,729,100.80/5,178,867.29
6. Step 6: Final answer
   x = 3,941,810.17