Finding the Fourth Proportional to 13,152.28, 18,152.50 and 7,774.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,152.28 : 18,152.50 = 7,774.50 : x
2. Step 2: Convert to fraction form
   13,152.28/18,152.50 = 7,774.50/x
3. Step 3: Cross multiply
   13,152.28x = 18,152.50 × 7,774.50
4. Step 4: Simplify right side
   13,152.28x = 141,126,611.25
5. Step 5: Solve for x
   x = 141,126,611.25/13,152.28
6. Step 6: Final answer
   x = 10,730.20