Finding the Fourth Proportional to 12,653.39, 17,461.77 and 6,987.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,653.39 : 17,461.77 = 6,987.98 : x
2. Step 2: Convert to fraction form
   12,653.39/17,461.77 = 6,987.98/x
3. Step 3: Cross multiply
   12,653.39x = 17,461.77 × 6,987.98
4. Step 4: Simplify right side
   12,653.39x = 122,022,499.52
5. Step 5: Solve for x
   x = 122,022,499.52/12,653.39
6. Step 6: Final answer
   x = 9,643.46