Finding the Fourth Proportional to 13,002.58, 19,505.89 and 4,235.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,002.58 : 19,505.89 = 4,235.45 : x
2. Step 2: Convert to fraction form
   13,002.58/19,505.89 = 4,235.45/x
3. Step 3: Cross multiply
   13,002.58x = 19,505.89 × 4,235.45
4. Step 4: Simplify right side
   13,002.58x = 82,616,275.86
5. Step 5: Solve for x
   x = 82,616,275.86/13,002.58
6. Step 6: Final answer
   x = 6,353.84