Finding the Fourth Proportional to 10,288.23, 15,420.67 and 4,730.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,288.23 : 15,420.67 = 4,730.09 : x
2. Step 2: Convert to fraction form
   10,288.23/15,420.67 = 4,730.09/x
3. Step 3: Cross multiply
   10,288.23x = 15,420.67 × 4,730.09
4. Step 4: Simplify right side
   10,288.23x = 72,941,156.96
5. Step 5: Solve for x
   x = 72,941,156.96/10,288.23
6. Step 6: Final answer
   x = 7,089.77