Finding the Fourth Proportional to 10,981.58, 15,150.75 and 7,623.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,981.58 : 15,150.75 = 7,623.50 : x
2. Step 2: Convert to fraction form
   10,981.58/15,150.75 = 7,623.50/x
3. Step 3: Cross multiply
   10,981.58x = 15,150.75 × 7,623.50
4. Step 4: Simplify right side
   10,981.58x = 115,501,742.63
5. Step 5: Solve for x
   x = 115,501,742.63/10,981.58
6. Step 6: Final answer
   x = 10,517.77