Finding the Fourth Proportional to 12,622.72, 17,415.84 and 7,316.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,622.72 : 17,415.84 = 7,316.48 : x
2. Step 2: Convert to fraction form
   12,622.72/17,415.84 = 7,316.48/x
3. Step 3: Cross multiply
   12,622.72x = 17,415.84 × 7,316.48
4. Step 4: Simplify right side
   12,622.72x = 127,422,645.04
5. Step 5: Solve for x
   x = 127,422,645.04/12,622.72
6. Step 6: Final answer
   x = 10,094.71