Finding the Fourth Proportional to 11,705.82, 16,164.90 and 7,521.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,705.82 : 16,164.90 = 7,521.42 : x
2. Step 2: Convert to fraction form
   11,705.82/16,164.90 = 7,521.42/x
3. Step 3: Cross multiply
   11,705.82x = 16,164.90 × 7,521.42
4. Step 4: Simplify right side
   11,705.82x = 121,583,002.16
5. Step 5: Solve for x
   x = 121,583,002.16/11,705.82
6. Step 6: Final answer
   x = 10,386.54