Finding the Fourth Proportional to 23,296.51, 32,149.76 and 12,686.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,296.51 : 32,149.76 = 12,686.72 : x
2. Step 2: Convert to fraction form
   23,296.51/32,149.76 = 12,686.72/x
3. Step 3: Cross multiply
   23,296.51x = 32,149.76 × 12,686.72
4. Step 4: Simplify right side
   23,296.51x = 407,875,003.19
5. Step 5: Solve for x
   x = 407,875,003.19/23,296.51
6. Step 6: Final answer
   x = 17,507.99