Finding the Fourth Proportional to 7,112.69, 10,670.05 and 3,780.07

Step by Step Solution

1. Step 1: Write the proportion equation
   7,112.69 : 10,670.05 = 3,780.07 : x
2. Step 2: Convert to fraction form
   7,112.69/10,670.05 = 3,780.07/x
3. Step 3: Cross multiply
   7,112.69x = 10,670.05 × 3,780.07
4. Step 4: Simplify right side
   7,112.69x = 40,333,517.00
5. Step 5: Solve for x
   x = 40,333,517.00/7,112.69
6. Step 6: Final answer
   x = 5,670.64