Finding the Fourth Proportional to 13,341.95, 18,415.76 and 7,680.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,341.95 : 18,415.76 = 7,680.69 : x
2. Step 2: Convert to fraction form
   13,341.95/18,415.76 = 7,680.69/x
3. Step 3: Cross multiply
   13,341.95x = 18,415.76 × 7,680.69
4. Step 4: Simplify right side
   13,341.95x = 141,445,705.27
5. Step 5: Solve for x
   x = 141,445,705.27/13,341.95
6. Step 6: Final answer
   x = 10,601.58