Finding the Fourth Proportional to 12,892,105.48, 17,791,442.20 and 7,091,039.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,892,105.48 : 17,791,442.20 = 7,091,039.49 : x
2. Step 2: Convert to fraction form
   12,892,105.48/17,791,442.20 = 7,091,039.49/x
3. Step 3: Cross multiply
   12,892,105.48x = 17,791,442.20 × 7,091,039.49
4. Step 4: Simplify right side
   12,892,105.48x = 126,159,819,224,252.48
5. Step 5: Solve for x
   x = 126,159,819,224,252.48/12,892,105.48
6. Step 6: Final answer
   x = 9,785,819.66