Finding the Fourth Proportional to 13,534.02, 18,664.83 and 8,498.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,534.02 : 18,664.83 = 8,498.72 : x
2. Step 2: Convert to fraction form
   13,534.02/18,664.83 = 8,498.72/x
3. Step 3: Cross multiply
   13,534.02x = 18,664.83 × 8,498.72
4. Step 4: Simplify right side
   13,534.02x = 158,627,070.69
5. Step 5: Solve for x
   x = 158,627,070.69/13,534.02
6. Step 6: Final answer
   x = 11,720.62