Finding the Fourth Proportional to 10,987.70, 16,469.93 and 3,590.17

Step by Step Solution

1. Step 1: Write the proportion equation
   10,987.70 : 16,469.93 = 3,590.17 : x
2. Step 2: Convert to fraction form
   10,987.70/16,469.93 = 3,590.17/x
3. Step 3: Cross multiply
   10,987.70x = 16,469.93 × 3,590.17
4. Step 4: Simplify right side
   10,987.70x = 59,129,909.03
5. Step 5: Solve for x
   x = 59,129,909.03/10,987.70
6. Step 6: Final answer
   x = 5,381.46