Finding the Fourth Proportional to 19,555.01, 26,978.83 and 12,844.28

Step by Step Solution

1. Step 1: Write the proportion equation
   19,555.01 : 26,978.83 = 12,844.28 : x
2. Step 2: Convert to fraction form
   19,555.01/26,978.83 = 12,844.28/x
3. Step 3: Cross multiply
   19,555.01x = 26,978.83 × 12,844.28
4. Step 4: Simplify right side
   19,555.01x = 346,523,646.59
5. Step 5: Solve for x
   x = 346,523,646.59/19,555.01
6. Step 6: Final answer
   x = 17,720.45