Finding the Fourth Proportional to 23,980.28, 35,980.77 and 12,873.99

Step by Step Solution

1. Step 1: Write the proportion equation
   23,980.28 : 35,980.77 = 12,873.99 : x
2. Step 2: Convert to fraction form
   23,980.28/35,980.77 = 12,873.99/x
3. Step 3: Cross multiply
   23,980.28x = 35,980.77 × 12,873.99
4. Step 4: Simplify right side
   23,980.28x = 463,216,073.17
5. Step 5: Solve for x
   x = 463,216,073.17/23,980.28
6. Step 6: Final answer
   x = 19,316.55