Finding the Fourth Proportional to 16,507.39, 22,784.87 and 13,530.33

Step by Step Solution

1. Step 1: Write the proportion equation
   16,507.39 : 22,784.87 = 13,530.33 : x
2. Step 2: Convert to fraction form
   16,507.39/22,784.87 = 13,530.33/x
3. Step 3: Cross multiply
   16,507.39x = 22,784.87 × 13,530.33
4. Step 4: Simplify right side
   16,507.39x = 308,286,742.46
5. Step 5: Solve for x
   x = 308,286,742.46/16,507.39
6. Step 6: Final answer
   x = 18,675.68