Finding the Fourth Proportional to 7,357.60, 10,153.43 and 4,213.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,357.60 : 10,153.43 = 4,213.78 : x
2. Step 2: Convert to fraction form
   7,357.60/10,153.43 = 4,213.78/x
3. Step 3: Cross multiply
   7,357.60x = 10,153.43 × 4,213.78
4. Step 4: Simplify right side
   7,357.60x = 42,784,320.27
5. Step 5: Solve for x
   x = 42,784,320.27/7,357.60
6. Step 6: Final answer
   x = 5,814.98