Finding the Fourth Proportional to 10,917.81, 16,379.91 and 3,522.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,917.81 : 16,379.91 = 3,522.12 : x
2. Step 2: Convert to fraction form
   10,917.81/16,379.91 = 3,522.12/x
3. Step 3: Cross multiply
   10,917.81x = 16,379.91 × 3,522.12
4. Step 4: Simplify right side
   10,917.81x = 57,692,008.61
5. Step 5: Solve for x
   x = 57,692,008.61/10,917.81
6. Step 6: Final answer
   x = 5,284.21