Finding the Fourth Proportional to 5,161.83, 7,123.32 and 2,803.95

Step by Step Solution

1. Step 1: Write the proportion equation
   5,161.83 : 7,123.32 = 2,803.95 : x
2. Step 2: Convert to fraction form
   5,161.83/7,123.32 = 2,803.95/x
3. Step 3: Cross multiply
   5,161.83x = 7,123.32 × 2,803.95
4. Step 4: Simplify right side
   5,161.83x = 19,973,459.83
5. Step 5: Solve for x
   x = 19,973,459.83/5,161.83
6. Step 6: Final answer
   x = 3,869.45