Finding the Fourth Proportional to 11,663.88, 17,495.76 and 3,870.84

Step by Step Solution

1. Step 1: Write the proportion equation
   11,663.88 : 17,495.76 = 3,870.84 : x
2. Step 2: Convert to fraction form
   11,663.88/17,495.76 = 3,870.84/x
3. Step 3: Cross multiply
   11,663.88x = 17,495.76 × 3,870.84
4. Step 4: Simplify right side
   11,663.88x = 67,723,287.64
5. Step 5: Solve for x
   x = 67,723,287.64/11,663.88
6. Step 6: Final answer
   x = 5,806.24