Finding the Fourth Proportional to 17,920.54, 26,878.83 and 4,774.06

Step by Step Solution

1. Step 1: Write the proportion equation
   17,920.54 : 26,878.83 = 4,774.06 : x
2. Step 2: Convert to fraction form
   17,920.54/26,878.83 = 4,774.06/x
3. Step 3: Cross multiply
   17,920.54x = 26,878.83 × 4,774.06
4. Step 4: Simplify right side
   17,920.54x = 128,321,147.15
5. Step 5: Solve for x
   x = 128,321,147.15/17,920.54
6. Step 6: Final answer
   x = 7,160.56