Finding the Fourth Proportional to 13,705.55, 18,913.67 and 7,417.93

Step by Step Solution

1. Step 1: Write the proportion equation
   13,705.55 : 18,913.67 = 7,417.93 : x
2. Step 2: Convert to fraction form
   13,705.55/18,913.67 = 7,417.93/x
3. Step 3: Cross multiply
   13,705.55x = 18,913.67 × 7,417.93
4. Step 4: Simplify right side
   13,705.55x = 140,300,280.10
5. Step 5: Solve for x
   x = 140,300,280.10/13,705.55
6. Step 6: Final answer
   x = 10,236.75