Finding the Fourth Proportional to 13,910.86, 19,196.72 and 8,604.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,910.86 : 19,196.72 = 8,604.28 : x
2. Step 2: Convert to fraction form
   13,910.86/19,196.72 = 8,604.28/x
3. Step 3: Cross multiply
   13,910.86x = 19,196.72 × 8,604.28
4. Step 4: Simplify right side
   13,910.86x = 165,173,953.96
5. Step 5: Solve for x
   x = 165,173,953.96/13,910.86
6. Step 6: Final answer
   x = 11,873.74