Finding the Fourth Proportional to 15,898.86, 21,940.52 and 9,933.99

Step by Step Solution

1. Step 1: Write the proportion equation
   15,898.86 : 21,940.52 = 9,933.99 : x
2. Step 2: Convert to fraction form
   15,898.86/21,940.52 = 9,933.99/x
3. Step 3: Cross multiply
   15,898.86x = 21,940.52 × 9,933.99
4. Step 4: Simplify right side
   15,898.86x = 217,956,856.60
5. Step 5: Solve for x
   x = 217,956,856.60/15,898.86
6. Step 6: Final answer
   x = 13,708.96