Finding the Fourth Proportional to 23,430.47, 32,334.86 and 12,820.12

Step by Step Solution

1. Step 1: Write the proportion equation
   23,430.47 : 32,334.86 = 12,820.12 : x
2. Step 2: Convert to fraction form
   23,430.47/32,334.86 = 12,820.12/x
3. Step 3: Cross multiply
   23,430.47x = 32,334.86 × 12,820.12
4. Step 4: Simplify right side
   23,430.47x = 414,536,736.60
5. Step 5: Solve for x
   x = 414,536,736.60/23,430.47
6. Step 6: Final answer
   x = 17,692.21