Finding the Fourth Proportional to 15,109.81, 22,667.18 and 5,251.91

Step by Step Solution

1. Step 1: Write the proportion equation
   15,109.81 : 22,667.18 = 5,251.91 : x
2. Step 2: Convert to fraction form
   15,109.81/22,667.18 = 5,251.91/x
3. Step 3: Cross multiply
   15,109.81x = 22,667.18 × 5,251.91
4. Step 4: Simplify right side
   15,109.81x = 119,045,849.72
5. Step 5: Solve for x
   x = 119,045,849.72/15,109.81
6. Step 6: Final answer
   x = 7,878.71