Finding the Fourth Proportional to 10,031.78, 13,848.47 and 7,162.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,031.78 : 13,848.47 = 7,162.76 : x
2. Step 2: Convert to fraction form
   10,031.78/13,848.47 = 7,162.76/x
3. Step 3: Cross multiply
   10,031.78x = 13,848.47 × 7,162.76
4. Step 4: Simplify right side
   10,031.78x = 99,193,292.64
5. Step 5: Solve for x
   x = 99,193,292.64/10,031.78
6. Step 6: Final answer
   x = 9,887.90