Finding the Fourth Proportional to 8,951,061.21, 12,353,945.90 and 5,280,875.07

Step by Step Solution

1. Step 1: Write the proportion equation
   8,951,061.21 : 12,353,945.90 = 5,280,875.07 : x
2. Step 2: Convert to fraction form
   8,951,061.21/12,353,945.90 = 5,280,875.07/x
3. Step 3: Cross multiply
   8,951,061.21x = 12,353,945.90 × 5,280,875.07
4. Step 4: Simplify right side
   8,951,061.21x = 65,239,644,893,034.34
5. Step 5: Solve for x
   x = 65,239,644,893,034.34/8,951,061.21
6. Step 6: Final answer
   x = 7,288,481.60