Finding the Fourth Proportional to 10,905.98, 16,250.76 and 10,377.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,905.98 : 16,250.76 = 10,377.05 : x
2. Step 2: Convert to fraction form
   10,905.98/16,250.76 = 10,377.05/x
3. Step 3: Cross multiply
   10,905.98x = 16,250.76 × 10,377.05
4. Step 4: Simplify right side
   10,905.98x = 168,634,867.80
5. Step 5: Solve for x
   x = 168,634,867.80/10,905.98
6. Step 6: Final answer
   x = 15,462.61