Finding the Fourth Proportional to 9,402.76, 12,976.23 and 5,210.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,402.76 : 12,976.23 = 5,210.74 : x
2. Step 2: Convert to fraction form
   9,402.76/12,976.23 = 5,210.74/x
3. Step 3: Cross multiply
   9,402.76x = 12,976.23 × 5,210.74
4. Step 4: Simplify right side
   9,402.76x = 67,615,760.71
5. Step 5: Solve for x
   x = 67,615,760.71/9,402.76
6. Step 6: Final answer
   x = 7,191.05