Finding the Fourth Proportional to 2,937.88, 4,429.06 and 2,779.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,937.88 : 4,429.06 = 2,779.12 : x
2. Step 2: Convert to fraction form
   2,937.88/4,429.06 = 2,779.12/x
3. Step 3: Cross multiply
   2,937.88x = 4,429.06 × 2,779.12
4. Step 4: Simplify right side
   2,937.88x = 12,308,889.23
5. Step 5: Solve for x
   x = 12,308,889.23/2,937.88
6. Step 6: Final answer
   x = 4,189.72