Finding the Fourth Proportional to 12,980.52, 19,459.10 and 4,658.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.52 : 19,459.10 = 4,658.59 : x
2. Step 2: Convert to fraction form
   12,980.52/19,459.10 = 4,658.59/x
3. Step 3: Cross multiply
   12,980.52x = 19,459.10 × 4,658.59
4. Step 4: Simplify right side
   12,980.52x = 90,651,968.67
5. Step 5: Solve for x
   x = 90,651,968.67/12,980.52
6. Step 6: Final answer
   x = 6,983.69