Finding the Fourth Proportional to 12,669.67, 17,477.13 and 7,363.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,669.67 : 17,477.13 = 7,363.90 : x
2. Step 2: Convert to fraction form
   12,669.67/17,477.13 = 7,363.90/x
3. Step 3: Cross multiply
   12,669.67x = 17,477.13 × 7,363.90
4. Step 4: Simplify right side
   12,669.67x = 128,699,837.61
5. Step 5: Solve for x
   x = 128,699,837.61/12,669.67
6. Step 6: Final answer
   x = 10,158.10