Finding the Fourth Proportional to 7,819.90, 10,787.42 and 5,301.16

Step by Step Solution

1. Step 1: Write the proportion equation
   7,819.90 : 10,787.42 = 5,301.16 : x
2. Step 2: Convert to fraction form
   7,819.90/10,787.42 = 5,301.16/x
3. Step 3: Cross multiply
   7,819.90x = 10,787.42 × 5,301.16
4. Step 4: Simplify right side
   7,819.90x = 57,185,825.69
5. Step 5: Solve for x
   x = 57,185,825.69/7,819.90
6. Step 6: Final answer
   x = 7,312.86