Finding the Fourth Proportional to 11,979.52, 17,970.56 and 5,053.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,979.52 : 17,970.56 = 5,053.12 : x
2. Step 2: Convert to fraction form
   11,979.52/17,970.56 = 5,053.12/x
3. Step 3: Cross multiply
   11,979.52x = 17,970.56 × 5,053.12
4. Step 4: Simplify right side
   11,979.52x = 90,807,396.15
5. Step 5: Solve for x
   x = 90,807,396.15/11,979.52
6. Step 6: Final answer
   x = 7,580.22