Finding the Fourth Proportional to 23,298.84, 32,153.72 and 12,688.28

Step by Step Solution

1. Step 1: Write the proportion equation
   23,298.84 : 32,153.72 = 12,688.28 : x
2. Step 2: Convert to fraction form
   23,298.84/32,153.72 = 12,688.28/x
3. Step 3: Cross multiply
   23,298.84x = 32,153.72 × 12,688.28
4. Step 4: Simplify right side
   23,298.84x = 407,975,402.40
5. Step 5: Solve for x
   x = 407,975,402.40/23,298.84
6. Step 6: Final answer
   x = 17,510.55