Finding the Fourth Proportional to 11,770.56, 17,654.58 and 3,978.36

Step by Step Solution

1. Step 1: Write the proportion equation
   11,770.56 : 17,654.58 = 3,978.36 : x
2. Step 2: Convert to fraction form
   11,770.56/17,654.58 = 3,978.36/x
3. Step 3: Cross multiply
   11,770.56x = 17,654.58 × 3,978.36
4. Step 4: Simplify right side
   11,770.56x = 70,236,274.89
5. Step 5: Solve for x
   x = 70,236,274.89/11,770.56
6. Step 6: Final answer
   x = 5,967.11