Finding the Fourth Proportional to 11,987.95, 17,983.98 and 3,667.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,987.95 : 17,983.98 = 3,667.76 : x
2. Step 2: Convert to fraction form
   11,987.95/17,983.98 = 3,667.76/x
3. Step 3: Cross multiply
   11,987.95x = 17,983.98 × 3,667.76
4. Step 4: Simplify right side
   11,987.95x = 65,960,922.48
5. Step 5: Solve for x
   x = 65,960,922.48/11,987.95
6. Step 6: Final answer
   x = 5,502.27