Finding the Fourth Proportional to 13,705.62, 18,913.77 and 7,417.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,705.62 : 18,913.77 = 7,417.98 : x
2. Step 2: Convert to fraction form
   13,705.62/18,913.77 = 7,417.98/x
3. Step 3: Cross multiply
   13,705.62x = 18,913.77 × 7,417.98
4. Step 4: Simplify right side
   13,705.62x = 140,301,967.58
5. Step 5: Solve for x
   x = 140,301,967.58/13,705.62
6. Step 6: Final answer
   x = 10,236.82