Finding the Fourth Proportional to 5,146.07, 7,101.61 and 2,788.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,146.07 : 7,101.61 = 2,788.22 : x
2. Step 2: Convert to fraction form
   5,146.07/7,101.61 = 2,788.22/x
3. Step 3: Cross multiply
   5,146.07x = 7,101.61 × 2,788.22
4. Step 4: Simplify right side
   5,146.07x = 19,800,861.82
5. Step 5: Solve for x
   x = 19,800,861.82/5,146.07
6. Step 6: Final answer
   x = 3,847.77