Finding the Fourth Proportional to 21,657.34, 32,498.97 and 12,429.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,657.34 : 32,498.97 = 12,429.82 : x
2. Step 2: Convert to fraction form
   21,657.34/32,498.97 = 12,429.82/x
3. Step 3: Cross multiply
   21,657.34x = 32,498.97 × 12,429.82
4. Step 4: Simplify right side
   21,657.34x = 403,956,347.29
5. Step 5: Solve for x
   x = 403,956,347.29/21,657.34
6. Step 6: Final answer
   x = 18,652.17