Finding the Fourth Proportional to 7,288.64, 10,071.56 and 5,189.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,288.64 : 10,071.56 = 5,189.12 : x
2. Step 2: Convert to fraction form
   7,288.64/10,071.56 = 5,189.12/x
3. Step 3: Cross multiply
   7,288.64x = 10,071.56 × 5,189.12
4. Step 4: Simplify right side
   7,288.64x = 52,262,533.43
5. Step 5: Solve for x
   x = 52,262,533.43/7,288.64
6. Step 6: Final answer
   x = 7,170.41