Finding the Fourth Proportional to 12,405,142.71, 17,116,588.31 and 7,247,507.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12,405,142.71 : 17,116,588.31 = 7,247,507.81 : x
2. Step 2: Convert to fraction form
   12,405,142.71/17,116,588.31 = 7,247,507.81/x
3. Step 3: Cross multiply
   12,405,142.71x = 17,116,588.31 × 7,247,507.81
4. Step 4: Simplify right side
   12,405,142.71x = 124,052,607,335,459.22
5. Step 5: Solve for x
   x = 124,052,607,335,459.22/12,405,142.71
6. Step 6: Final answer
   x = 10,000,095.14