Finding the Fourth Proportional to 12,979.48, 17,911.82 and 7,390.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,979.48 : 17,911.82 = 7,390.52 : x
2. Step 2: Convert to fraction form
   12,979.48/17,911.82 = 7,390.52/x
3. Step 3: Cross multiply
   12,979.48x = 17,911.82 × 7,390.52
4. Step 4: Simplify right side
   12,979.48x = 132,377,663.95
5. Step 5: Solve for x
   x = 132,377,663.95/12,979.48
6. Step 6: Final answer
   x = 10,199.00