Finding the Fourth Proportional to 9,510.95, 14,268.58 and 5,128.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,510.95 : 14,268.58 = 5,128.31 : x
2. Step 2: Convert to fraction form
   9,510.95/14,268.58 = 5,128.31/x
3. Step 3: Cross multiply
   9,510.95x = 14,268.58 × 5,128.31
4. Step 4: Simplify right side
   9,510.95x = 73,173,701.50
5. Step 5: Solve for x
   x = 73,173,701.50/9,510.95
6. Step 6: Final answer
   x = 7,693.63