Finding the Fourth Proportional to 23,820.72, 32,875.56 and 13,210.80

Step by Step Solution

1. Step 1: Write the proportion equation
   23,820.72 : 32,875.56 = 13,210.80 : x
2. Step 2: Convert to fraction form
   23,820.72/32,875.56 = 13,210.80/x
3. Step 3: Cross multiply
   23,820.72x = 32,875.56 × 13,210.80
4. Step 4: Simplify right side
   23,820.72x = 434,312,448.05
5. Step 5: Solve for x
   x = 434,312,448.05/23,820.72
6. Step 6: Final answer
   x = 18,232.55