Finding the Fourth Proportional to 3,813.72, 5,725.40 and 2,994.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,813.72 : 5,725.40 = 2,994.80 : x
2. Step 2: Convert to fraction form
   3,813.72/5,725.40 = 2,994.80/x
3. Step 3: Cross multiply
   3,813.72x = 5,725.40 × 2,994.80
4. Step 4: Simplify right side
   3,813.72x = 17,146,427.92
5. Step 5: Solve for x
   x = 17,146,427.92/3,813.72
6. Step 6: Final answer
   x = 4,495.99