Finding the Fourth Proportional to 7,992.56, 11,978.58 and 7,003.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,992.56 : 11,978.58 = 7,003.10 : x
2. Step 2: Convert to fraction form
   7,992.56/11,978.58 = 7,003.10/x
3. Step 3: Cross multiply
   7,992.56x = 11,978.58 × 7,003.10
4. Step 4: Simplify right side
   7,992.56x = 83,887,193.60
5. Step 5: Solve for x
   x = 83,887,193.60/7,992.56
6. Step 6: Final answer
   x = 10,495.66