Finding the Fourth Proportional to 7,526.12, 10,380.87 and 5,164.16

Step by Step Solution

1. Step 1: Write the proportion equation
   7,526.12 : 10,380.87 = 5,164.16 : x
2. Step 2: Convert to fraction form
   7,526.12/10,380.87 = 5,164.16/x
3. Step 3: Cross multiply
   7,526.12x = 10,380.87 × 5,164.16
4. Step 4: Simplify right side
   7,526.12x = 53,608,421.71
5. Step 5: Solve for x
   x = 53,608,421.71/7,526.12
6. Step 6: Final answer
   x = 7,122.99