Finding the Fourth Proportional to 16,181.94, 22,335.30 and 9,899.58

Step by Step Solution

1. Step 1: Write the proportion equation
   16,181.94 : 22,335.30 = 9,899.58 : x
2. Step 2: Convert to fraction form
   16,181.94/22,335.30 = 9,899.58/x
3. Step 3: Cross multiply
   16,181.94x = 22,335.30 × 9,899.58
4. Step 4: Simplify right side
   16,181.94x = 221,110,089.17
5. Step 5: Solve for x
   x = 221,110,089.17/16,181.94
6. Step 6: Final answer
   x = 13,664.00