Finding the Fourth Proportional to 15,111.69, 22,671.63 and 5,251.51

Step by Step Solution

1. Step 1: Write the proportion equation
   15,111.69 : 22,671.63 = 5,251.51 : x
2. Step 2: Convert to fraction form
   15,111.69/22,671.63 = 5,251.51/x
3. Step 3: Cross multiply
   15,111.69x = 22,671.63 × 5,251.51
4. Step 4: Simplify right side
   15,111.69x = 119,060,320.00
5. Step 5: Solve for x
   x = 119,060,320.00/15,111.69
6. Step 6: Final answer
   x = 7,878.69