Finding the Fourth Proportional to 13,089.89, 18,062.68 and 7,422.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,089.89 : 18,062.68 = 7,422.83 : x
2. Step 2: Convert to fraction form
   13,089.89/18,062.68 = 7,422.83/x
3. Step 3: Cross multiply
   13,089.89x = 18,062.68 × 7,422.83
4. Step 4: Simplify right side
   13,089.89x = 134,076,161.85
5. Step 5: Solve for x
   x = 134,076,161.85/13,089.89
6. Step 6: Final answer
   x = 10,242.72