Finding the Fourth Proportional to 15,822.86, 21,836.31 and 8,749.74

Step by Step Solution

1. Step 1: Write the proportion equation
   15,822.86 : 21,836.31 = 8,749.74 : x
2. Step 2: Convert to fraction form
   15,822.86/21,836.31 = 8,749.74/x
3. Step 3: Cross multiply
   15,822.86x = 21,836.31 × 8,749.74
4. Step 4: Simplify right side
   15,822.86x = 191,061,991.31
5. Step 5: Solve for x
   x = 191,061,991.31/15,822.86
6. Step 6: Final answer
   x = 12,075.06