Finding the Fourth Proportional to 23,570.71, 32,528.42 and 12,961.15

Step by Step Solution

1. Step 1: Write the proportion equation
   23,570.71 : 32,528.42 = 12,961.15 : x
2. Step 2: Convert to fraction form
   23,570.71/32,528.42 = 12,961.15/x
3. Step 3: Cross multiply
   23,570.71x = 32,528.42 × 12,961.15
4. Step 4: Simplify right side
   23,570.71x = 421,605,666.08
5. Step 5: Solve for x
   x = 421,605,666.08/23,570.71
6. Step 6: Final answer
   x = 17,886.85