Finding the Fourth Proportional to 16,300.53, 22,495.05 and 10,638.90

Step by Step Solution

1. Step 1: Write the proportion equation
   16,300.53 : 22,495.05 = 10,638.90 : x
2. Step 2: Convert to fraction form
   16,300.53/22,495.05 = 10,638.90/x
3. Step 3: Cross multiply
   16,300.53x = 22,495.05 × 10,638.90
4. Step 4: Simplify right side
   16,300.53x = 239,322,587.45
5. Step 5: Solve for x
   x = 239,322,587.45/16,300.53
6. Step 6: Final answer
   x = 14,681.89