Finding the Fourth Proportional to 11,610.56, 17,422.76 and 4,215.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,610.56 : 17,422.76 = 4,215.60 : x
2. Step 2: Convert to fraction form
   11,610.56/17,422.76 = 4,215.60/x
3. Step 3: Cross multiply
   11,610.56x = 17,422.76 × 4,215.60
4. Step 4: Simplify right side
   11,610.56x = 73,447,387.06
5. Step 5: Solve for x
   x = 73,447,387.06/11,610.56
6. Step 6: Final answer
   x = 6,325.91