Finding the Fourth Proportional to 11,990.02, 17,987.22 and 3,669.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,990.02 : 17,987.22 = 3,669.94 : x
2. Step 2: Convert to fraction form
   11,990.02/17,987.22 = 3,669.94/x
3. Step 3: Cross multiply
   11,990.02x = 17,987.22 × 3,669.94
4. Step 4: Simplify right side
   11,990.02x = 66,012,018.17
5. Step 5: Solve for x
   x = 66,012,018.17/11,990.02
6. Step 6: Final answer
   x = 5,505.58