Finding the Fourth Proportional to 17,401.72, 26,090.43 and 5,551.57

Step by Step Solution

1. Step 1: Write the proportion equation
   17,401.72 : 26,090.43 = 5,551.57 : x
2. Step 2: Convert to fraction form
   17,401.72/26,090.43 = 5,551.57/x
3. Step 3: Cross multiply
   17,401.72x = 26,090.43 × 5,551.57
4. Step 4: Simplify right side
   17,401.72x = 144,842,848.48
5. Step 5: Solve for x
   x = 144,842,848.48/17,401.72
6. Step 6: Final answer
   x = 8,323.48