Finding the Fourth Proportional to 11,806.12, 17,622.81 and 10,404.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,806.12 : 17,622.81 = 10,404.91 : x
2. Step 2: Convert to fraction form
   11,806.12/17,622.81 = 10,404.91/x
3. Step 3: Cross multiply
   11,806.12x = 17,622.81 × 10,404.91
4. Step 4: Simplify right side
   11,806.12x = 183,363,667.58
5. Step 5: Solve for x
   x = 183,363,667.58/11,806.12
6. Step 6: Final answer
   x = 15,531.23