Finding the Fourth Proportional to 17,870.29, 26,796.75 and 5,388

Step by Step Solution

1. Step 1: Write the proportion equation
   17,870.29 : 26,796.75 = 5,388 : x
2. Step 2: Convert to fraction form
   17,870.29/26,796.75 = 5,388/x
3. Step 3: Cross multiply
   17,870.29x = 26,796.75 × 5,388
4. Step 4: Simplify right side
   17,870.29x = 144,380,889
5. Step 5: Solve for x
   x = 144,380,889/17,870.29
6. Step 6: Final answer
   x = 8,079.38