Finding the Fourth Proportional to 14,488.96, 21,743.16 and 5,129

Step by Step Solution

1. Step 1: Write the proportion equation
   14,488.96 : 21,743.16 = 5,129 : x
2. Step 2: Convert to fraction form
   14,488.96/21,743.16 = 5,129/x
3. Step 3: Cross multiply
   14,488.96x = 21,743.16 × 5,129
4. Step 4: Simplify right side
   14,488.96x = 111,520,667.64
5. Step 5: Solve for x
   x = 111,520,667.64/14,488.96
6. Step 6: Final answer
   x = 7,696.94