Finding the Fourth Proportional to 17,147.98, 23,611.61 and 15,011.56

Step by Step Solution

1. Step 1: Write the proportion equation
   17,147.98 : 23,611.61 = 15,011.56 : x
2. Step 2: Convert to fraction form
   17,147.98/23,611.61 = 15,011.56/x
3. Step 3: Cross multiply
   17,147.98x = 23,611.61 × 15,011.56
4. Step 4: Simplify right side
   17,147.98x = 354,447,100.21
5. Step 5: Solve for x
   x = 354,447,100.21/17,147.98
6. Step 6: Final answer
   x = 20,669.90