Finding the Fourth Proportional to 16,695.18, 23,038.56 and 9,621.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,695.18 : 23,038.56 = 9,621.72 : x
2. Step 2: Convert to fraction form
   16,695.18/23,038.56 = 9,621.72/x
3. Step 3: Cross multiply
   16,695.18x = 23,038.56 × 9,621.72
4. Step 4: Simplify right side
   16,695.18x = 221,670,573.52
5. Step 5: Solve for x
   x = 221,670,573.52/16,695.18
6. Step 6: Final answer
   x = 13,277.52