Finding the Fourth Proportional to 16,160.12, 22,300.86 and 9,086.60

Step by Step Solution

1. Step 1: Write the proportion equation
   16,160.12 : 22,300.86 = 9,086.60 : x
2. Step 2: Convert to fraction form
   16,160.12/22,300.86 = 9,086.60/x
3. Step 3: Cross multiply
   16,160.12x = 22,300.86 × 9,086.60
4. Step 4: Simplify right side
   16,160.12x = 202,638,994.48
5. Step 5: Solve for x
   x = 202,638,994.48/16,160.12
6. Step 6: Final answer
   x = 12,539.45