Finding the Fourth Proportional to 3,897,066.33, 5,378,066.28 and 2,178,191.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,897,066.33 : 5,378,066.28 = 2,178,191.25 : x
2. Step 2: Convert to fraction form
   3,897,066.33/5,378,066.28 = 2,178,191.25/x
3. Step 3: Cross multiply
   3,897,066.33x = 5,378,066.28 × 2,178,191.25
4. Step 4: Simplify right side
   3,897,066.33x = 11,714,456,913,016.05
5. Step 5: Solve for x
   x = 11,714,456,913,016.05/3,897,066.33
6. Step 6: Final answer
   x = 3,005,968.06