Finding the Fourth Proportional to 3,908,499.51, 5,393,699.76 and 2,189,634.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,908,499.51 : 5,393,699.76 = 2,189,634.15 : x
2. Step 2: Convert to fraction form
   3,908,499.51/5,393,699.76 = 2,189,634.15/x
3. Step 3: Cross multiply
   3,908,499.51x = 5,393,699.76 × 2,189,634.15
4. Step 4: Simplify right side
   3,908,499.51x = 11,810,229,189,342.80
5. Step 5: Solve for x
   x = 11,810,229,189,342.80/3,908,499.51
6. Step 6: Final answer
   x = 3,021,678.56