Finding the Fourth Proportional to 22,661.86, 31,271.91 and 12,590.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,661.86 : 31,271.91 = 12,590.12 : x
2. Step 2: Convert to fraction form
   22,661.86/31,271.91 = 12,590.12/x
3. Step 3: Cross multiply
   22,661.86x = 31,271.91 × 12,590.12
4. Step 4: Simplify right side
   22,661.86x = 393,717,099.53
5. Step 5: Solve for x
   x = 393,717,099.53/22,661.86
6. Step 6: Final answer
   x = 17,373.56