Finding the Fourth Proportional to 9,087.50, 13,623.95 and 5,136.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,087.50 : 13,623.95 = 5,136.32 : x
2. Step 2: Convert to fraction form
   9,087.50/13,623.95 = 5,136.32/x
3. Step 3: Cross multiply
   9,087.50x = 13,623.95 × 5,136.32
4. Step 4: Simplify right side
   9,087.50x = 69,976,873.06
5. Step 5: Solve for x
   x = 69,976,873.06/9,087.50
6. Step 6: Final answer
   x = 7,700.35