Finding the Fourth Proportional to 13,385.86, 18,473.79 and 7,796.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,385.86 : 18,473.79 = 7,796.50 : x
2. Step 2: Convert to fraction form
   13,385.86/18,473.79 = 7,796.50/x
3. Step 3: Cross multiply
   13,385.86x = 18,473.79 × 7,796.50
4. Step 4: Simplify right side
   13,385.86x = 144,030,903.74
5. Step 5: Solve for x
   x = 144,030,903.74/13,385.86
6. Step 6: Final answer
   x = 10,759.93