Finding the Fourth Proportional to 22,459.22, 31,005.87 and 13,508.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,459.22 : 31,005.87 = 13,508.72 : x
2. Step 2: Convert to fraction form
   22,459.22/31,005.87 = 13,508.72/x
3. Step 3: Cross multiply
   22,459.22x = 31,005.87 × 13,508.72
4. Step 4: Simplify right side
   22,459.22x = 418,849,602.76
5. Step 5: Solve for x
   x = 418,849,602.76/22,459.22
6. Step 6: Final answer
   x = 18,649.34