Finding the Fourth Proportional to 22,431.89, 30,956.01 and 13,005.92

Step by Step Solution

1. Step 1: Write the proportion equation
   22,431.89 : 30,956.01 = 13,005.92 : x
2. Step 2: Convert to fraction form
   22,431.89/30,956.01 = 13,005.92/x
3. Step 3: Cross multiply
   22,431.89x = 30,956.01 × 13,005.92
4. Step 4: Simplify right side
   22,431.89x = 402,611,389.58
5. Step 5: Solve for x
   x = 402,611,389.58/22,431.89
6. Step 6: Final answer
   x = 17,948.17