Finding the Fourth Proportional to 13,200.41, 19,784.01 and 9,432.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,200.41 : 19,784.01 = 9,432.57 : x
2. Step 2: Convert to fraction form
   13,200.41/19,784.01 = 9,432.57/x
3. Step 3: Cross multiply
   13,200.41x = 19,784.01 × 9,432.57
4. Step 4: Simplify right side
   13,200.41x = 186,614,059.21
5. Step 5: Solve for x
   x = 186,614,059.21/13,200.41
6. Step 6: Final answer
   x = 14,136.99