Finding the Fourth Proportional to 5,705.68, 7,870.89 and 3,611.02

Step by Step Solution

1. Step 1: Write the proportion equation
   5,705.68 : 7,870.89 = 3,611.02 : x
2. Step 2: Convert to fraction form
   5,705.68/7,870.89 = 3,611.02/x
3. Step 3: Cross multiply
   5,705.68x = 7,870.89 × 3,611.02
4. Step 4: Simplify right side
   5,705.68x = 28,421,941.21
5. Step 5: Solve for x
   x = 28,421,941.21/5,705.68
6. Step 6: Final answer
   x = 4,981.34