Finding the Fourth Proportional to 10,038.96, 15,072.24 and 5,111.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,038.96 : 15,072.24 = 5,111.92 : x
2. Step 2: Convert to fraction form
   10,038.96/15,072.24 = 5,111.92/x
3. Step 3: Cross multiply
   10,038.96x = 15,072.24 × 5,111.92
4. Step 4: Simplify right side
   10,038.96x = 77,048,085.10
5. Step 5: Solve for x
   x = 77,048,085.10/10,038.96
6. Step 6: Final answer
   x = 7,674.91