Finding the Fourth Proportional to 3,779.86, 5,216.50 and 2,101.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,779.86 : 5,216.50 = 2,101.81 : x
2. Step 2: Convert to fraction form
   3,779.86/5,216.50 = 2,101.81/x
3. Step 3: Cross multiply
   3,779.86x = 5,216.50 × 2,101.81
4. Step 4: Simplify right side
   3,779.86x = 10,964,065.78
5. Step 5: Solve for x
   x = 10,964,065.78/3,779.86
6. Step 6: Final answer
   x = 2,900.66