Finding the Fourth Proportional to 12,684.51, 17,500.35 and 7,374.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,684.51 : 17,500.35 = 7,374.96 : x
2. Step 2: Convert to fraction form
   12,684.51/17,500.35 = 7,374.96/x
3. Step 3: Cross multiply
   12,684.51x = 17,500.35 × 7,374.96
4. Step 4: Simplify right side
   12,684.51x = 129,064,381.24
5. Step 5: Solve for x
   x = 129,064,381.24/12,684.51
6. Step 6: Final answer
   x = 10,174.96