Finding the Fourth Proportional to 17,618.56, 26,426.49 and 6,520.03

Step by Step Solution

1. Step 1: Write the proportion equation
   17,618.56 : 26,426.49 = 6,520.03 : x
2. Step 2: Convert to fraction form
   17,618.56/26,426.49 = 6,520.03/x
3. Step 3: Cross multiply
   17,618.56x = 26,426.49 × 6,520.03
4. Step 4: Simplify right side
   17,618.56x = 172,301,507.59
5. Step 5: Solve for x
   x = 172,301,507.59/17,618.56
6. Step 6: Final answer
   x = 9,779.55