Finding the Fourth Proportional to 11,665.68, 17,492.04 and 3,870.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,665.68 : 17,492.04 = 3,870.24 : x
2. Step 2: Convert to fraction form
   11,665.68/17,492.04 = 3,870.24/x
3. Step 3: Cross multiply
   11,665.68x = 17,492.04 × 3,870.24
4. Step 4: Simplify right side
   11,665.68x = 67,698,392.89
5. Step 5: Solve for x
   x = 67,698,392.89/11,665.68
6. Step 6: Final answer
   x = 5,803.21