Finding the Fourth Proportional to 13,298.83, 18,219.32 and 12,800.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,298.83 : 18,219.32 = 12,800.27 : x
2. Step 2: Convert to fraction form
   13,298.83/18,219.32 = 12,800.27/x
3. Step 3: Cross multiply
   13,298.83x = 18,219.32 × 12,800.27
4. Step 4: Simplify right side
   13,298.83x = 233,212,244.76
5. Step 5: Solve for x
   x = 233,212,244.76/13,298.83
6. Step 6: Final answer
   x = 17,536.30