Finding the Fourth Proportional to 23,688.48, 32,690.10 and 13,078.12

Step by Step Solution

1. Step 1: Write the proportion equation
   23,688.48 : 32,690.10 = 13,078.12 : x
2. Step 2: Convert to fraction form
   23,688.48/32,690.10 = 13,078.12/x
3. Step 3: Cross multiply
   23,688.48x = 32,690.10 × 13,078.12
4. Step 4: Simplify right side
   23,688.48x = 427,525,050.61
5. Step 5: Solve for x
   x = 427,525,050.61/23,688.48
6. Step 6: Final answer
   x = 18,047.80