Finding the Fourth Proportional to 10,900.36, 16,211.21 and 10,783.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,900.36 : 16,211.21 = 10,783.72 : x
2. Step 2: Convert to fraction form
   10,900.36/16,211.21 = 10,783.72/x
3. Step 3: Cross multiply
   10,900.36x = 16,211.21 × 10,783.72
4. Step 4: Simplify right side
   10,900.36x = 174,817,149.50
5. Step 5: Solve for x
   x = 174,817,149.50/10,900.36
6. Step 6: Final answer
   x = 16,037.74