Finding the Fourth Proportional to 13,761.21, 18,990.54 and 7,473.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,761.21 : 18,990.54 = 7,473.59 : x
2. Step 2: Convert to fraction form
   13,761.21/18,990.54 = 7,473.59/x
3. Step 3: Cross multiply
   13,761.21x = 18,990.54 × 7,473.59
4. Step 4: Simplify right side
   13,761.21x = 141,927,414.89
5. Step 5: Solve for x
   x = 141,927,414.89/13,761.21
6. Step 6: Final answer
   x = 10,313.59