Finding the Fourth Proportional to 7,299.48, 10,005.72 and 7,201.02

Step by Step Solution

1. Step 1: Write the proportion equation
   7,299.48 : 10,005.72 = 7,201.02 : x
2. Step 2: Convert to fraction form
   7,299.48/10,005.72 = 7,201.02/x
3. Step 3: Cross multiply
   7,299.48x = 10,005.72 × 7,201.02
4. Step 4: Simplify right side
   7,299.48x = 72,051,389.83
5. Step 5: Solve for x
   x = 72,051,389.83/7,299.48
6. Step 6: Final answer
   x = 9,870.76