Finding the Fourth Proportional to 23,599.98, 32,568.84 and 12,990.06

Step by Step Solution

1. Step 1: Write the proportion equation
   23,599.98 : 32,568.84 = 12,990.06 : x
2. Step 2: Convert to fraction form
   23,599.98/32,568.84 = 12,990.06/x
3. Step 3: Cross multiply
   23,599.98x = 32,568.84 × 12,990.06
4. Step 4: Simplify right side
   23,599.98x = 423,071,185.73
5. Step 5: Solve for x
   x = 423,071,185.73/23,599.98
6. Step 6: Final answer
   x = 17,926.76