Finding the Fourth Proportional to 11,870.70, 17,814.80 and 5,630.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.70 : 17,814.80 = 5,630.69 : x
2. Step 2: Convert to fraction form
   11,870.70/17,814.80 = 5,630.69/x
3. Step 3: Cross multiply
   11,870.70x = 17,814.80 × 5,630.69
4. Step 4: Simplify right side
   11,870.70x = 100,309,616.21
5. Step 5: Solve for x
   x = 100,309,616.21/11,870.70
6. Step 6: Final answer
   x = 8,450.19