Finding the Fourth Proportional to 13,353.18, 18,427.06 and 7,384.70

Step by Step Solution

1. Step 1: Write the proportion equation
   13,353.18 : 18,427.06 = 7,384.70 : x
2. Step 2: Convert to fraction form
   13,353.18/18,427.06 = 7,384.70/x
3. Step 3: Cross multiply
   13,353.18x = 18,427.06 × 7,384.70
4. Step 4: Simplify right side
   13,353.18x = 136,078,309.98
5. Step 5: Solve for x
   x = 136,078,309.98/13,353.18
6. Step 6: Final answer
   x = 10,190.70