Finding the Fourth Proportional to 21,499.08, 32,257.86 and 11,118.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,499.08 : 32,257.86 = 11,118.12 : x
2. Step 2: Convert to fraction form
   21,499.08/32,257.86 = 11,118.12/x
3. Step 3: Cross multiply
   21,499.08x = 32,257.86 × 11,118.12
4. Step 4: Simplify right side
   21,499.08x = 358,646,758.42
5. Step 5: Solve for x
   x = 358,646,758.42/21,499.08
6. Step 6: Final answer
   x = 16,681.96