Finding the Fourth Proportional to 10,782.09, 14,864.45 and 7,378.47

Step by Step Solution

1. Step 1: Write the proportion equation
   10,782.09 : 14,864.45 = 7,378.47 : x
2. Step 2: Convert to fraction form
   10,782.09/14,864.45 = 7,378.47/x
3. Step 3: Cross multiply
   10,782.09x = 14,864.45 × 7,378.47
4. Step 4: Simplify right side
   10,782.09x = 109,676,861.50
5. Step 5: Solve for x
   x = 109,676,861.50/10,782.09
6. Step 6: Final answer
   x = 10,172.13