Finding the Fourth Proportional to 7,298.48, 10,111.58 and 7,142.96

Step by Step Solution

1. Step 1: Write the proportion equation
   7,298.48 : 10,111.58 = 7,142.96 : x
2. Step 2: Convert to fraction form
   7,298.48/10,111.58 = 7,142.96/x
3. Step 3: Cross multiply
   7,298.48x = 10,111.58 × 7,142.96
4. Step 4: Simplify right side
   7,298.48x = 72,226,611.48
5. Step 5: Solve for x
   x = 72,226,611.48/7,298.48
6. Step 6: Final answer
   x = 9,896.12