Finding the Fourth Proportional to 11,644.05, 17,468.87 and 5,072.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,644.05 : 17,468.87 = 5,072.12 : x
2. Step 2: Convert to fraction form
   11,644.05/17,468.87 = 5,072.12/x
3. Step 3: Cross multiply
   11,644.05x = 17,468.87 × 5,072.12
4. Step 4: Simplify right side
   11,644.05x = 88,604,157.71
5. Step 5: Solve for x
   x = 88,604,157.71/11,644.05
6. Step 6: Final answer
   x = 7,609.39