Finding the Fourth Proportional to 23,790.16, 32,830.72 and 13,180

Step by Step Solution

1. Step 1: Write the proportion equation
   23,790.16 : 32,830.72 = 13,180 : x
2. Step 2: Convert to fraction form
   23,790.16/32,830.72 = 13,180/x
3. Step 3: Cross multiply
   23,790.16x = 32,830.72 × 13,180
4. Step 4: Simplify right side
   23,790.16x = 432,708,889.60
5. Step 5: Solve for x
   x = 432,708,889.60/23,790.16
6. Step 6: Final answer
   x = 18,188.57