Finding the Fourth Proportional to 10,221,123.25, 15,338,502.91 and 5,301,688.87

Step by Step Solution

1. Step 1: Write the proportion equation
   10,221,123.25 : 15,338,502.91 = 5,301,688.87 : x
2. Step 2: Convert to fraction form
   10,221,123.25/15,338,502.91 = 5,301,688.87/x
3. Step 3: Cross multiply
   10,221,123.25x = 15,338,502.91 × 5,301,688.87
4. Step 4: Simplify right side
   10,221,123.25x = 81,319,970,095,554.91
5. Step 5: Solve for x
   x = 81,319,970,095,554.91/10,221,123.25
6. Step 6: Final answer
   x = 7,956,069.81