Finding the Fourth Proportional to 10,853.31, 16,279.98 and 10,299.27

Step by Step Solution

1. Step 1: Write the proportion equation
   10,853.31 : 16,279.98 = 10,299.27 : x
2. Step 2: Convert to fraction form
   10,853.31/16,279.98 = 10,299.27/x
3. Step 3: Cross multiply
   10,853.31x = 16,279.98 × 10,299.27
4. Step 4: Simplify right side
   10,853.31x = 167,671,909.61
5. Step 5: Solve for x
   x = 167,671,909.61/10,853.31
6. Step 6: Final answer
   x = 15,448.92