Finding the Fourth Proportional to 28,298,090.72, 42,452,414.04 and 9,126,848.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,298,090.72 : 42,452,414.04 = 9,126,848.72 : x
2. Step 2: Convert to fraction form
   28,298,090.72/42,452,414.04 = 9,126,848.72/x
3. Step 3: Cross multiply
   28,298,090.72x = 42,452,414.04 × 9,126,848.72
4. Step 4: Simplify right side
   28,298,090.72x = 387,456,760,741,884.06
5. Step 5: Solve for x
   x = 387,456,760,741,884.06/28,298,090.72
6. Step 6: Final answer
   x = 13,691,975.36