Finding the Fourth Proportional to 23,298.51, 32,152.52 and 12,688.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,298.51 : 32,152.52 = 12,688.72 : x
2. Step 2: Convert to fraction form
   23,298.51/32,152.52 = 12,688.72/x
3. Step 3: Cross multiply
   23,298.51x = 32,152.52 × 12,688.72
4. Step 4: Simplify right side
   23,298.51x = 407,974,323.57
5. Step 5: Solve for x
   x = 407,974,323.57/23,298.51
6. Step 6: Final answer
   x = 17,510.75