Finding the Fourth Proportional to 16,427.40, 22,663.38 and 10,128.84

Step by Step Solution

1. Step 1: Write the proportion equation
   16,427.40 : 22,663.38 = 10,128.84 : x
2. Step 2: Convert to fraction form
   16,427.40/22,663.38 = 10,128.84/x
3. Step 3: Cross multiply
   16,427.40x = 22,663.38 × 10,128.84
4. Step 4: Simplify right side
   16,427.40x = 229,553,749.88
5. Step 5: Solve for x
   x = 229,553,749.88/16,427.40
6. Step 6: Final answer
   x = 13,973.83