Finding the Fourth Proportional to 3,991,061.31, 5,507,669.76 and 2,272,181.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,991,061.31 : 5,507,669.76 = 2,272,181.78 : x
2. Step 2: Convert to fraction form
   3,991,061.31/5,507,669.76 = 2,272,181.78/x
3. Step 3: Cross multiply
   3,991,061.31x = 5,507,669.76 × 2,272,181.78
4. Step 4: Simplify right side
   3,991,061.31x = 12,514,426,878,928.97
5. Step 5: Solve for x
   x = 12,514,426,878,928.97/3,991,061.31
6. Step 6: Final answer
   x = 3,135,613.79