Finding the Fourth Proportional to 5,705.55, 7,873.56 and 3,187.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,705.55 : 7,873.56 = 3,187.50 : x
2. Step 2: Convert to fraction form
   5,705.55/7,873.56 = 3,187.50/x
3. Step 3: Cross multiply
   5,705.55x = 7,873.56 × 3,187.50
4. Step 4: Simplify right side
   5,705.55x = 25,096,972.50
5. Step 5: Solve for x
   x = 25,096,972.50/5,705.55
6. Step 6: Final answer
   x = 4,398.69