Finding the Fourth Proportional to 12,804.45, 17,671.50 and 7,503.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,804.45 : 17,671.50 = 7,503.72 : x
2. Step 2: Convert to fraction form
   12,804.45/17,671.50 = 7,503.72/x
3. Step 3: Cross multiply
   12,804.45x = 17,671.50 × 7,503.72
4. Step 4: Simplify right side
   12,804.45x = 132,601,987.98
5. Step 5: Solve for x
   x = 132,601,987.98/12,804.45
6. Step 6: Final answer
   x = 10,355.93