Finding the Fourth Proportional to 6,665,952.69, 9,999,447.47 and 2,178,682.29

Step by Step Solution

1. Step 1: Write the proportion equation
   6,665,952.69 : 9,999,447.47 = 2,178,682.29 : x
2. Step 2: Convert to fraction form
   6,665,952.69/9,999,447.47 = 2,178,682.29/x
3. Step 3: Cross multiply
   6,665,952.69x = 9,999,447.47 × 2,178,682.29
4. Step 4: Simplify right side
   6,665,952.69x = 21,785,619,101,780.89
5. Step 5: Solve for x
   x = 21,785,619,101,780.89/6,665,952.69
6. Step 6: Final answer
   x = 3,268,192.88