Finding the Fourth Proportional to 10,081.59, 15,109.25 and 5,147.07

Step by Step Solution

1. Step 1: Write the proportion equation
   10,081.59 : 15,109.25 = 5,147.07 : x
2. Step 2: Convert to fraction form
   10,081.59/15,109.25 = 5,147.07/x
3. Step 3: Cross multiply
   10,081.59x = 15,109.25 × 5,147.07
4. Step 4: Simplify right side
   10,081.59x = 77,768,341.66
5. Step 5: Solve for x
   x = 77,768,341.66/10,081.59
6. Step 6: Final answer
   x = 7,713.90