Finding the Fourth Proportional to 7,459.10, 10,458.10 and 7,459.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,459.10 : 10,458.10 = 7,459.10 : x
2. Step 2: Convert to fraction form
   7,459.10/10,458.10 = 7,459.10/x
3. Step 3: Cross multiply
   7,459.10x = 10,458.10 × 7,459.10
4. Step 4: Simplify right side
   7,459.10x = 78,008,013.71
5. Step 5: Solve for x
   x = 78,008,013.71/7,459.10
6. Step 6: Final answer
   x = 10,458.10