Finding the Fourth Proportional to 6,300.15, 8,700.54 and 5,192.07

Step by Step Solution

1. Step 1: Write the proportion equation
   6,300.15 : 8,700.54 = 5,192.07 : x
2. Step 2: Convert to fraction form
   6,300.15/8,700.54 = 5,192.07/x
3. Step 3: Cross multiply
   6,300.15x = 8,700.54 × 5,192.07
4. Step 4: Simplify right side
   6,300.15x = 45,173,812.72
5. Step 5: Solve for x
   x = 45,173,812.72/6,300.15
6. Step 6: Final answer
   x = 7,170.28