Finding the Fourth Proportional to 11,106.25, 15,316.69 and 9,214.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11,106.25 : 15,316.69 = 9,214.83 : x
2. Step 2: Convert to fraction form
   11,106.25/15,316.69 = 9,214.83/x
3. Step 3: Cross multiply
   11,106.25x = 15,316.69 × 9,214.83
4. Step 4: Simplify right side
   11,106.25x = 141,140,656.22
5. Step 5: Solve for x
   x = 141,140,656.22/11,106.25
6. Step 6: Final answer
   x = 12,708.22