Finding the Fourth Proportional to 11,870.70, 17,810.18 and 4,477.29

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.70 : 17,810.18 = 4,477.29 : x
2. Step 2: Convert to fraction form
   11,870.70/17,810.18 = 4,477.29/x
3. Step 3: Cross multiply
   11,870.70x = 17,810.18 × 4,477.29
4. Step 4: Simplify right side
   11,870.70x = 79,741,318.43
5. Step 5: Solve for x
   x = 79,741,318.43/11,870.70
6. Step 6: Final answer
   x = 6,717.49