Finding the Fourth Proportional to 21,004,689.84, 31,488,126.12 and 7,538,368.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,004,689.84 : 31,488,126.12 = 7,538,368.56 : x
2. Step 2: Convert to fraction form
   21,004,689.84/31,488,126.12 = 7,538,368.56/x
3. Step 3: Cross multiply
   21,004,689.84x = 31,488,126.12 × 7,538,368.56
4. Step 4: Simplify right side
   21,004,689.84x = 237,369,099,956,322.78
5. Step 5: Solve for x
   x = 237,369,099,956,322.78/21,004,689.84
6. Step 6: Final answer
   x = 11,300,766.72