Finding the Fourth Proportional to 6,916.42, 10,354.45 and 5,145.34

Step by Step Solution

1. Step 1: Write the proportion equation
   6,916.42 : 10,354.45 = 5,145.34 : x
2. Step 2: Convert to fraction form
   6,916.42/10,354.45 = 5,145.34/x
3. Step 3: Cross multiply
   6,916.42x = 10,354.45 × 5,145.34
4. Step 4: Simplify right side
   6,916.42x = 53,277,146.39
5. Step 5: Solve for x
   x = 53,277,146.39/6,916.42
6. Step 6: Final answer
   x = 7,702.99