Finding the Fourth Proportional to 9,188,145.28, 12,679,416.72 and 5,058,142.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,188,145.28 : 12,679,416.72 = 5,058,142.84 : x
2. Step 2: Convert to fraction form
   9,188,145.28/12,679,416.72 = 5,058,142.84/x
3. Step 3: Cross multiply
   9,188,145.28x = 12,679,416.72 × 5,058,142.84
4. Step 4: Simplify right side
   9,188,145.28x = 64,134,300,897,644.29
5. Step 5: Solve for x
   x = 64,134,300,897,644.29/9,188,145.28
6. Step 6: Final answer
   x = 6,980,113.93