Finding the Fourth Proportional to 13,434.72, 18,539.88 and 7,384.92

Step by Step Solution

1. Step 1: Write the proportion equation
   13,434.72 : 18,539.88 = 7,384.92 : x
2. Step 2: Convert to fraction form
   13,434.72/18,539.88 = 7,384.92/x
3. Step 3: Cross multiply
   13,434.72x = 18,539.88 × 7,384.92
4. Step 4: Simplify right side
   13,434.72x = 136,915,530.61
5. Step 5: Solve for x
   x = 136,915,530.61/13,434.72
6. Step 6: Final answer
   x = 10,191.17