Finding the Fourth Proportional to 9,351.60, 12,913.47 and 5,820.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,351.60 : 12,913.47 = 5,820.81 : x
2. Step 2: Convert to fraction form
   9,351.60/12,913.47 = 5,820.81/x
3. Step 3: Cross multiply
   9,351.60x = 12,913.47 × 5,820.81
4. Step 4: Simplify right side
   9,351.60x = 75,166,855.31
5. Step 5: Solve for x
   x = 75,166,855.31/9,351.60
6. Step 6: Final answer
   x = 8,037.86