Finding the Fourth Proportional to 10,881.91, 15,012.72 and 7,103.87

Step by Step Solution

1. Step 1: Write the proportion equation
   10,881.91 : 15,012.72 = 7,103.87 : x
2. Step 2: Convert to fraction form
   10,881.91/15,012.72 = 7,103.87/x
3. Step 3: Cross multiply
   10,881.91x = 15,012.72 × 7,103.87
4. Step 4: Simplify right side
   10,881.91x = 106,648,392.46
5. Step 5: Solve for x
   x = 106,648,392.46/10,881.91
6. Step 6: Final answer
   x = 9,800.52