Finding the Fourth Proportional to 15,728,789.28, 21,709,269.52 and 10,293,132

Step by Step Solution

1. Step 1: Write the proportion equation
   15,728,789.28 : 21,709,269.52 = 10,293,132 : x
2. Step 2: Convert to fraction form
   15,728,789.28/21,709,269.52 = 10,293,132/x
3. Step 3: Cross multiply
   15,728,789.28x = 21,709,269.52 × 10,293,132
4. Step 4: Simplify right side
   15,728,789.28x = 223,456,376,792,936.62
5. Step 5: Solve for x
   x = 223,456,376,792,936.62/15,728,789.28
6. Step 6: Final answer
   x = 14,206,838.99