Finding the Fourth Proportional to 7,973.12, 11,004.72 and 5,173.76

Step by Step Solution

1. Step 1: Write the proportion equation
   7,973.12 : 11,004.72 = 5,173.76 : x
2. Step 2: Convert to fraction form
   7,973.12/11,004.72 = 5,173.76/x
3. Step 3: Cross multiply
   7,973.12x = 11,004.72 × 5,173.76
4. Step 4: Simplify right side
   7,973.12x = 56,935,780.15
5. Step 5: Solve for x
   x = 56,935,780.15/7,973.12
6. Step 6: Final answer
   x = 7,140.97