Finding the Fourth Proportional to 16,113.16, 24,147.06 and 12,811.60

Step by Step Solution

1. Step 1: Write the proportion equation
   16,113.16 : 24,147.06 = 12,811.60 : x
2. Step 2: Convert to fraction form
   16,113.16/24,147.06 = 12,811.60/x
3. Step 3: Cross multiply
   16,113.16x = 24,147.06 × 12,811.60
4. Step 4: Simplify right side
   16,113.16x = 309,362,473.90
5. Step 5: Solve for x
   x = 309,362,473.90/16,113.16
6. Step 6: Final answer
   x = 19,199.37