Finding the Fourth Proportional to 13,007.74, 19,517.54 and 5,513.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,007.74 : 19,517.54 = 5,513.35 : x
2. Step 2: Convert to fraction form
   13,007.74/19,517.54 = 5,513.35/x
3. Step 3: Cross multiply
   13,007.74x = 19,517.54 × 5,513.35
4. Step 4: Simplify right side
   13,007.74x = 107,607,001.59
5. Step 5: Solve for x
   x = 107,607,001.59/13,007.74
6. Step 6: Final answer
   x = 8,272.54