Finding the Fourth Proportional to 12,100.21, 18,142.56 and 4,698.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,100.21 : 18,142.56 = 4,698.59 : x
2. Step 2: Convert to fraction form
   12,100.21/18,142.56 = 4,698.59/x
3. Step 3: Cross multiply
   12,100.21x = 18,142.56 × 4,698.59
4. Step 4: Simplify right side
   12,100.21x = 85,244,360.28
5. Step 5: Solve for x
   x = 85,244,360.28/12,100.21
6. Step 6: Final answer
   x = 7,044.87