Finding the Fourth Proportional to 7,870.89, 11,806.38 and 2,934.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870.89 : 11,806.38 = 2,934.75 : x
2. Step 2: Convert to fraction form
   7,870.89/11,806.38 = 2,934.75/x
3. Step 3: Cross multiply
   7,870.89x = 11,806.38 × 2,934.75
4. Step 4: Simplify right side
   7,870.89x = 34,648,773.71
5. Step 5: Solve for x
   x = 34,648,773.71/7,870.89
6. Step 6: Final answer
   x = 4,402.14