Finding the Fourth Proportional to 15,816.04, 21,826.24 and 8,645.98

Step by Step Solution

1. Step 1: Write the proportion equation
   15,816.04 : 21,826.24 = 8,645.98 : x
2. Step 2: Convert to fraction form
   15,816.04/21,826.24 = 8,645.98/x
3. Step 3: Cross multiply
   15,816.04x = 21,826.24 × 8,645.98
4. Step 4: Simplify right side
   15,816.04x = 188,709,234.52
5. Step 5: Solve for x
   x = 188,709,234.52/15,816.04
6. Step 6: Final answer
   x = 11,931.51