Finding the Fourth Proportional to 10,346.29, 14,279.28 and 10,064.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,346.29 : 14,279.28 = 10,064.86 : x
2. Step 2: Convert to fraction form
   10,346.29/14,279.28 = 10,064.86/x
3. Step 3: Cross multiply
   10,346.29x = 14,279.28 × 10,064.86
4. Step 4: Simplify right side
   10,346.29x = 143,718,954.10
5. Step 5: Solve for x
   x = 143,718,954.10/10,346.29
6. Step 6: Final answer
   x = 13,890.87