Finding the Fourth Proportional to 5,870.30, 8,805.50 and 2,124.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,870.30 : 8,805.50 = 2,124.72 : x
2. Step 2: Convert to fraction form
   5,870.30/8,805.50 = 2,124.72/x
3. Step 3: Cross multiply
   5,870.30x = 8,805.50 × 2,124.72
4. Step 4: Simplify right side
   5,870.30x = 18,709,211.34
5. Step 5: Solve for x
   x = 18,709,211.34/5,870.30
6. Step 6: Final answer
   x = 3,187.10