Finding the Fourth Proportional to 13,002.50, 19,432.18 and 9,499.80

Step by Step Solution

1. Step 1: Write the proportion equation
   13,002.50 : 19,432.18 = 9,499.80 : x
2. Step 2: Convert to fraction form
   13,002.50/19,432.18 = 9,499.80/x
3. Step 3: Cross multiply
   13,002.50x = 19,432.18 × 9,499.80
4. Step 4: Simplify right side
   13,002.50x = 184,601,823.56
5. Step 5: Solve for x
   x = 184,601,823.56/13,002.50
6. Step 6: Final answer
   x = 14,197.41