Finding the Fourth Proportional to 10,917.58, 15,054.34 and 7,374.64

Step by Step Solution

1. Step 1: Write the proportion equation
   10,917.58 : 15,054.34 = 7,374.64 : x
2. Step 2: Convert to fraction form
   10,917.58/15,054.34 = 7,374.64/x
3. Step 3: Cross multiply
   10,917.58x = 15,054.34 × 7,374.64
4. Step 4: Simplify right side
   10,917.58x = 111,020,319.50
5. Step 5: Solve for x
   x = 111,020,319.50/10,917.58
6. Step 6: Final answer
   x = 10,168.95