Finding the Fourth Proportional to 11,555.30, 17,322.56 and 4,158.02

Step by Step Solution

1. Step 1: Write the proportion equation
   11,555.30 : 17,322.56 = 4,158.02 : x
2. Step 2: Convert to fraction form
   11,555.30/17,322.56 = 4,158.02/x
3. Step 3: Cross multiply
   11,555.30x = 17,322.56 × 4,158.02
4. Step 4: Simplify right side
   11,555.30x = 72,027,530.14
5. Step 5: Solve for x
   x = 72,027,530.14/11,555.30
6. Step 6: Final answer
   x = 6,233.29