Finding the Fourth Proportional to 23,601.85, 32,570.30 and 12,991.25

Step by Step Solution

1. Step 1: Write the proportion equation
   23,601.85 : 32,570.30 = 12,991.25 : x
2. Step 2: Convert to fraction form
   23,601.85/32,570.30 = 12,991.25/x
3. Step 3: Cross multiply
   23,601.85x = 32,570.30 × 12,991.25
4. Step 4: Simplify right side
   23,601.85x = 423,129,023.78
5. Step 5: Solve for x
   x = 423,129,023.78/23,601.85
6. Step 6: Final answer
   x = 17,927.79