Finding the Fourth Proportional to 7,870.22, 11,805.38 and 2,939.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870.22 : 11,805.38 = 2,939.82 : x
2. Step 2: Convert to fraction form
   7,870.22/11,805.38 = 2,939.82/x
3. Step 3: Cross multiply
   7,870.22x = 11,805.38 × 2,939.82
4. Step 4: Simplify right side
   7,870.22x = 34,705,692.23
5. Step 5: Solve for x
   x = 34,705,692.23/7,870.22
6. Step 6: Final answer
   x = 4,409.75