Finding the Fourth Proportional to 11,870.82, 17,810.36 and 4,477.40

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.82 : 17,810.36 = 4,477.40 : x
2. Step 2: Convert to fraction form
   11,870.82/17,810.36 = 4,477.40/x
3. Step 3: Cross multiply
   11,870.82x = 17,810.36 × 4,477.40
4. Step 4: Simplify right side
   11,870.82x = 79,744,105.86
5. Step 5: Solve for x
   x = 79,744,105.86/11,870.82
6. Step 6: Final answer
   x = 6,717.66