Finding the Fourth Proportional to 7,870.88, 11,806.69 and 2,606.37

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870.88 : 11,806.69 = 2,606.37 : x
2. Step 2: Convert to fraction form
   7,870.88/11,806.69 = 2,606.37/x
3. Step 3: Cross multiply
   7,870.88x = 11,806.69 × 2,606.37
4. Step 4: Simplify right side
   7,870.88x = 30,772,602.62
5. Step 5: Solve for x
   x = 30,772,602.62/7,870.88
6. Step 6: Final answer
   x = 3,909.68