Finding the Fourth Proportional to 13,394.79, 18,484.72 and 7,426.46

Step by Step Solution

1. Step 1: Write the proportion equation
   13,394.79 : 18,484.72 = 7,426.46 : x
2. Step 2: Convert to fraction form
   13,394.79/18,484.72 = 7,426.46/x
3. Step 3: Cross multiply
   13,394.79x = 18,484.72 × 7,426.46
4. Step 4: Simplify right side
   13,394.79x = 137,276,061.34
5. Step 5: Solve for x
   x = 137,276,061.34/13,394.79
6. Step 6: Final answer
   x = 10,248.47