Finding the Fourth Proportional to 13,340.00, 18,407.61 and 7,961.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,340.00 : 18,407.61 = 7,961.45 : x
2. Step 2: Convert to fraction form
   13,340.00/18,407.61 = 7,961.45/x
3. Step 3: Cross multiply
   13,340.00x = 18,407.61 × 7,961.45
4. Step 4: Simplify right side
   13,340.00x = 146,551,174.60
5. Step 5: Solve for x
   x = 146,551,174.60/13,340.00
6. Step 6: Final answer
   x = 10,985.85