Finding the Fourth Proportional to 9,415.56, 12,994.50 and 5,437.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,415.56 : 12,994.50 = 5,437.92 : x
2. Step 2: Convert to fraction form
   9,415.56/12,994.50 = 5,437.92/x
3. Step 3: Cross multiply
   9,415.56x = 12,994.50 × 5,437.92
4. Step 4: Simplify right side
   9,415.56x = 70,663,051.44
5. Step 5: Solve for x
   x = 70,663,051.44/9,415.56
6. Step 6: Final answer
   x = 7,504.92