Finding the Fourth Proportional to 23,580.71, 32,540.72 and 12,970.36

Step by Step Solution

1. Step 1: Write the proportion equation
   23,580.71 : 32,540.72 = 12,970.36 : x
2. Step 2: Convert to fraction form
   23,580.71/32,540.72 = 12,970.36/x
3. Step 3: Cross multiply
   23,580.71x = 32,540.72 × 12,970.36
4. Step 4: Simplify right side
   23,580.71x = 422,064,853.06
5. Step 5: Solve for x
   x = 422,064,853.06/23,580.71
6. Step 6: Final answer
   x = 17,898.73