Finding the Fourth Proportional to 9,050.32, 12,459.58 and 7,870.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,050.32 : 12,459.58 = 7,870.76 : x
2. Step 2: Convert to fraction form
   9,050.32/12,459.58 = 7,870.76/x
3. Step 3: Cross multiply
   9,050.32x = 12,459.58 × 7,870.76
4. Step 4: Simplify right side
   9,050.32x = 98,066,363.88
5. Step 5: Solve for x
   x = 98,066,363.88/9,050.32
6. Step 6: Final answer
   x = 10,835.68