Finding the Fourth Proportional to 10,036.70, 15,064.31 and 5,109.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,036.70 : 15,064.31 = 5,109.89 : x
2. Step 2: Convert to fraction form
   10,036.70/15,064.31 = 5,109.89/x
3. Step 3: Cross multiply
   10,036.70x = 15,064.31 × 5,109.89
4. Step 4: Simplify right side
   10,036.70x = 76,976,967.03
5. Step 5: Solve for x
   x = 76,976,967.03/10,036.70
6. Step 6: Final answer
   x = 7,669.55