Finding the Fourth Proportional to 23,100.09, 31,886.31 and 13,668.63

Step by Step Solution

1. Step 1: Write the proportion equation
   23,100.09 : 31,886.31 = 13,668.63 : x
2. Step 2: Convert to fraction form
   23,100.09/31,886.31 = 13,668.63/x
3. Step 3: Cross multiply
   23,100.09x = 31,886.31 × 13,668.63
4. Step 4: Simplify right side
   23,100.09x = 435,842,173.46
5. Step 5: Solve for x
   x = 435,842,173.46/23,100.09
6. Step 6: Final answer
   x = 18,867.55