Finding the Fourth Proportional to 10,997.37, 15,156.02 and 7,810.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,997.37 : 15,156.02 = 7,810.81 : x
2. Step 2: Convert to fraction form
   10,997.37/15,156.02 = 7,810.81/x
3. Step 3: Cross multiply
   10,997.37x = 15,156.02 × 7,810.81
4. Step 4: Simplify right side
   10,997.37x = 118,380,774.21
5. Step 5: Solve for x
   x = 118,380,774.21/10,997.37
6. Step 6: Final answer
   x = 10,764.46