Finding the Fourth Proportional to 11,215.41, 16,834.05 and 8,558.07

Step by Step Solution

1. Step 1: Write the proportion equation
   11,215.41 : 16,834.05 = 8,558.07 : x
2. Step 2: Convert to fraction form
   11,215.41/16,834.05 = 8,558.07/x
3. Step 3: Cross multiply
   11,215.41x = 16,834.05 × 8,558.07
4. Step 4: Simplify right side
   11,215.41x = 144,066,978.28
5. Step 5: Solve for x
   x = 144,066,978.28/11,215.41
6. Step 6: Final answer
   x = 12,845.45