Finding the Fourth Proportional to 3,903,719.13, 5,387,300.78 and 2,161,388.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,903,719.13 : 5,387,300.78 = 2,161,388.52 : x
2. Step 2: Convert to fraction form
   3,903,719.13/5,387,300.78 = 2,161,388.52/x
3. Step 3: Cross multiply
   3,903,719.13x = 5,387,300.78 × 2,161,388.52
4. Step 4: Simplify right side
   3,903,719.13x = 11,644,050,048,872.10
5. Step 5: Solve for x
   x = 11,644,050,048,872.10/3,903,719.13
6. Step 6: Final answer
   x = 2,982,809.38