Finding the Fourth Proportional to 12,722.86, 17,557.59 and 7,133.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,722.86 : 17,557.59 = 7,133.50 : x
2. Step 2: Convert to fraction form
   12,722.86/17,557.59 = 7,133.50/x
3. Step 3: Cross multiply
   12,722.86x = 17,557.59 × 7,133.50
4. Step 4: Simplify right side
   12,722.86x = 125,247,068.27
5. Step 5: Solve for x
   x = 125,247,068.27/12,722.86
6. Step 6: Final answer
   x = 9,844.25