Finding the Fourth Proportional to 16,216.48, 22,367.64 and 9,931.96

Step by Step Solution

1. Step 1: Write the proportion equation
   16,216.48 : 22,367.64 = 9,931.96 : x
2. Step 2: Convert to fraction form
   16,216.48/22,367.64 = 9,931.96/x
3. Step 3: Cross multiply
   16,216.48x = 22,367.64 × 9,931.96
4. Step 4: Simplify right side
   16,216.48x = 222,154,505.77
5. Step 5: Solve for x
   x = 222,154,505.77/16,216.48
6. Step 6: Final answer
   x = 13,699.31