Finding the Fourth Proportional to 5,300.60, 7,956.42 and 3,915.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,300.60 : 7,956.42 = 3,915.50 : x
2. Step 2: Convert to fraction form
   5,300.60/7,956.42 = 3,915.50/x
3. Step 3: Cross multiply
   5,300.60x = 7,956.42 × 3,915.50
4. Step 4: Simplify right side
   5,300.60x = 31,153,362.51
5. Step 5: Solve for x
   x = 31,153,362.51/5,300.60
6. Step 6: Final answer
   x = 5,877.33