Finding the Fourth Proportional to 9,806.54, 14,696.78 and 5,130.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,806.54 : 14,696.78 = 5,130.54 : x
2. Step 2: Convert to fraction form
   9,806.54/14,696.78 = 5,130.54/x
3. Step 3: Cross multiply
   9,806.54x = 14,696.78 × 5,130.54
4. Step 4: Simplify right side
   9,806.54x = 75,402,392.01
5. Step 5: Solve for x
   x = 75,402,392.01/9,806.54
6. Step 6: Final answer
   x = 7,688.99