Finding the Fourth Proportional to 13,096.21, 18,072.74 and 7,127.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,096.21 : 18,072.74 = 7,127.89 : x
2. Step 2: Convert to fraction form
   13,096.21/18,072.74 = 7,127.89/x
3. Step 3: Cross multiply
   13,096.21x = 18,072.74 × 7,127.89
4. Step 4: Simplify right side
   13,096.21x = 128,820,502.72
5. Step 5: Solve for x
   x = 128,820,502.72/13,096.21
6. Step 6: Final answer
   x = 9,836.47