Finding the Fourth Proportional to 7,876.80, 10,876.32 and 5,364.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,876.80 : 10,876.32 = 5,364.18 : x
2. Step 2: Convert to fraction form
   7,876.80/10,876.32 = 5,364.18/x
3. Step 3: Cross multiply
   7,876.80x = 10,876.32 × 5,364.18
4. Step 4: Simplify right side
   7,876.80x = 58,342,538.22
5. Step 5: Solve for x
   x = 58,342,538.22/7,876.80
6. Step 6: Final answer
   x = 7,406.88