Finding the Fourth Proportional to 18,259.76, 27,388.56 and 5,111.84

Step by Step Solution

1. Step 1: Write the proportion equation
   18,259.76 : 27,388.56 = 5,111.84 : x
2. Step 2: Convert to fraction form
   18,259.76/27,388.56 = 5,111.84/x
3. Step 3: Cross multiply
   18,259.76x = 27,388.56 × 5,111.84
4. Step 4: Simplify right side
   18,259.76x = 140,005,936.55
5. Step 5: Solve for x
   x = 140,005,936.55/18,259.76
6. Step 6: Final answer
   x = 7,667.46