Finding the Fourth Proportional to 22,607.21, 31,191.68 and 13,046.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,607.21 : 31,191.68 = 13,046.42 : x
2. Step 2: Convert to fraction form
   22,607.21/31,191.68 = 13,046.42/x
3. Step 3: Cross multiply
   22,607.21x = 31,191.68 × 13,046.42
4. Step 4: Simplify right side
   22,607.21x = 406,939,835.76
5. Step 5: Solve for x
   x = 406,939,835.76/22,607.21
6. Step 6: Final answer
   x = 18,000.45