Finding the Fourth Proportional to 7,111.64, 9,815.82 and 4,319.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.64 : 9,815.82 = 4,319.48 : x
2. Step 2: Convert to fraction form
   7,111.64/9,815.82 = 4,319.48/x
3. Step 3: Cross multiply
   7,111.64x = 9,815.82 × 4,319.48
4. Step 4: Simplify right side
   7,111.64x = 42,399,238.17
5. Step 5: Solve for x
   x = 42,399,238.17/7,111.64
6. Step 6: Final answer
   x = 5,961.95