Finding the Fourth Proportional to 12,972.91, 17,903.06 and 7,672.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,972.91 : 17,903.06 = 7,672.27 : x
2. Step 2: Convert to fraction form
   12,972.91/17,903.06 = 7,672.27/x
3. Step 3: Cross multiply
   12,972.91x = 17,903.06 × 7,672.27
4. Step 4: Simplify right side
   12,972.91x = 137,357,110.15
5. Step 5: Solve for x
   x = 137,357,110.15/12,972.91
6. Step 6: Final answer
   x = 10,588.00