Finding the Fourth Proportional to 8,973.88, 13,461.72 and 3,431.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,973.88 : 13,461.72 = 3,431.89 : x
2. Step 2: Convert to fraction form
   8,973.88/13,461.72 = 3,431.89/x
3. Step 3: Cross multiply
   8,973.88x = 13,461.72 × 3,431.89
4. Step 4: Simplify right side
   8,973.88x = 46,199,142.25
5. Step 5: Solve for x
   x = 46,199,142.25/8,973.88
6. Step 6: Final answer
   x = 5,148.18