Finding the Fourth Proportional to 7,680.60, 11,513.52 and 4,899.42

Step by Step Solution

1. Step 1: Write the proportion equation
   7,680.60 : 11,513.52 = 4,899.42 : x
2. Step 2: Convert to fraction form
   7,680.60/11,513.52 = 4,899.42/x
3. Step 3: Cross multiply
   7,680.60x = 11,513.52 × 4,899.42
4. Step 4: Simplify right side
   7,680.60x = 56,409,570.16
5. Step 5: Solve for x
   x = 56,409,570.16/7,680.60
6. Step 6: Final answer
   x = 7,344.42