Finding the Fourth Proportional to 25,300.49, 37,950.80 and 7,770.20

Step by Step Solution

1. Step 1: Write the proportion equation
   25,300.49 : 37,950.80 = 7,770.20 : x
2. Step 2: Convert to fraction form
   25,300.49/37,950.80 = 7,770.20/x
3. Step 3: Cross multiply
   25,300.49x = 37,950.80 × 7,770.20
4. Step 4: Simplify right side
   25,300.49x = 294,885,077.56
5. Step 5: Solve for x
   x = 294,885,077.56/25,300.49
6. Step 6: Final answer
   x = 11,655.31