Finding the Fourth Proportional to 32,986.21, 49,459.37 and 12,971.72

Step by Step Solution

1. Step 1: Write the proportion equation
   32,986.21 : 49,459.37 = 12,971.72 : x
2. Step 2: Convert to fraction form
   32,986.21/49,459.37 = 12,971.72/x
3. Step 3: Cross multiply
   32,986.21x = 49,459.37 × 12,971.72
4. Step 4: Simplify right side
   32,986.21x = 641,573,099.02
5. Step 5: Solve for x
   x = 641,573,099.02/32,986.21
6. Step 6: Final answer
   x = 19,449.74