Finding the Fourth Proportional to 11,770, 17,651.25 and 3,870.70

Step by Step Solution

1. Step 1: Write the proportion equation
   11,770 : 17,651.25 = 3,870.70 : x
2. Step 2: Convert to fraction form
   11,770/17,651.25 = 3,870.70/x
3. Step 3: Cross multiply
   11,770x = 17,651.25 × 3,870.70
4. Step 4: Simplify right side
   11,770x = 68,322,693.38
5. Step 5: Solve for x
   x = 68,322,693.38/11,770
6. Step 6: Final answer
   x = 5,804.82