Finding the Fourth Proportional to 9,003.56, 12,422.85 and 5,417.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,003.56 : 12,422.85 = 5,417.55 : x
2. Step 2: Convert to fraction form
   9,003.56/12,422.85 = 5,417.55/x
3. Step 3: Cross multiply
   9,003.56x = 12,422.85 × 5,417.55
4. Step 4: Simplify right side
   9,003.56x = 67,301,437.29
5. Step 5: Solve for x
   x = 67,301,437.29/9,003.56
6. Step 6: Final answer
   x = 7,474.98